More quotes from Heather Watson's coach Diego Veronelli. He tells BBC Radio 5 live: "There are a lot of good things to take from this. Right now, she said she didn't play well enough in the big moments.
"The difference was very little and we will watch the game over and try to fix anything we need to."
Heather Watson's coach, Diego Veronelli, has been talking to BBC Radio 5 live. He says: "I'm so proud. There are a lot of positives to take but it is hard to talk. I felt she deserved to win but you have to win the last point.
"That game at 3-0, if she had taken it and gone 4-0 then that would've been crucial, but once it was 3-1 Serena got back into the match.
"We both said before the match that we don't just want a decent match, we want to win. Heather has been dreaming of this day since she was 11 or 12 years old - to play the world number one on Centre Court and she was right there, but right now it's hard to speak."
"Super, super close"
Williams 6-2 4-6 7-5 Watson
Heather Watson: "Maybe I will reflect on this more positively in a few weeks time, but maybe not.
"I am disappointed that I did not achieve my goal of making the second week of a Grand Slam. But I was super, super close and after the second set I played very smart."
Beat Serena next time?
Williams 6-2 4-6 7-5 Watson
Heather Watson: "I know how I'd play if I played her again. I wish I could have played one point differently to see how it might have changed things."
"Best atmosphere I have ever played in"
Williams 6-2 4-6 7-5 Watson
Heather Watson: "I was not handling her pace very well at the start and I was not sticking to the game plan I had although I don't think that she let me to be fair.
"It was the best atmosphere that I have played in at Wimbledon. I didn't get tired during the match, that is one of my strengths and I tried to use that.
"I got use to the feel of the ball off her racquet - it was hard and heavy - and hopefully that will help me when I play her again."
'I can compete with the best'
Williams 6-2 4-6 7-5 Watson
Heather Watson: "I had chances and it was so close with points that could have gone either way but when she needs to hit a winner she does it.
"But I've learned I can compete with the best in the world."
'I'm disappointed'
Williams 6-2 4-6 7-5 Watson
Heather Watson: "I was two points away from winning that match so I am pretty disappointed. The atmosphere was fantastic and pushed me on, but I just wished I could have closed it out.
"I wouldn't call losing the greatest day of my career. I am pleased that I gave myself the chance to play the best in the world and gave myself the opportunity to beat her. I didn't take it, but I hope the experience will help me next time.
"She had a lot of free points on her serve."
Hear from Heather
Heather Watson is now talking to the press.... here's what she has to say...
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Centre Court - 13:00 BST start
Samuel Groth (Aus) vs Roger Federer (Sui) [2]
Jelena Jankovic (Ser) [28] vs Petra Kvitova (Cze) [2]
Andreas Seppi (Ita) [25] vs Andy Murray (GBR) [3]
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Caught your breathe? Pulse rate returning to something near normal? Good, don't take down the bunting though...
There are a couple of Brits could use some of that stirring support tomorrow on the show courts.
Here is the order of play.
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Williams 6-2 4-6 7-5 Watson
Justine Henin
Seven-time Grand Slam champion on BBC Radio 5 live
"Not only did Heather hit the ball very well, she played a perfect match tactically. She was very good in defence and tried to put some pressure on Serena. But what Heather missed was hitting more winners. To make the difference she could be more aggressive."
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Choose your match for some late-night action
Heather Watson may just have bowed out in heroic fashion to Serena Williams but the live action hasn't finished yet.
US Open champion Marin Cilic and John Isner are currently slugging it out on Court One. Cilic leads two sets to one and it is 5-5 in the fourth.
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Williams 6-2 4-6 7-5 Watson
Jeff Tarango
Former professional tennis player on BBC Radio 5 live
"Serena had a bad day and she somehow pulled it through. I expect a lot more drama and a lot more effort from Serena as the tournament goes on."
'Heather's backhand was world class'
Williams 6-2 4-6 7-5 Watson
PACopyright: PA
More quotes from Great Britain's Fed Cup captain Judy Murray.
"After the first set was so one-sided, Heather's backhand was world class and she can take a lot of encouragement from that performance. Hopefully it will spur her on to greater things," Murray tells BBC Radio 5 live.
"I hope she can get over it quite quickly as this was the first time she has been in such a position against the best player in the world. But if Heather is realistic, she will use that to her advantage and say 'I can hang with the best of them'."
Great Britain's Fed Cup captain Judy Murray has been talking to BBC Radio 5 live. She says: "It was an amazing match. Heather was blown away in the first set and Serena was serving big and hitting big off the ground. But Heather dug in, there were a lot of drop shots and short balls and she disrupted Serena's rhythm.
"To be 3-0 up in the third and serving for the match, I think Heather will be devastated to not come away with a victory as she was so, so close. But it's such an encouraging performance as she never gave up."
Watson should gain confidence
Williams 6-2 4-6 7-5 Watson
Tracy Austin
Two-time US Open champion on BBC Radio 5 live
EPACopyright: EPA
"Having gone through this I'd put more money on Serena. Annabel said Heather wouldn't sleep tonight but she won't sleep for another month. This will give Heather a lot of confidence, she can get at least top 20 this year."
Top-10 tennis from Watson
Williams 6-2 4-6 7-5 Watson
Sam Smith
Former British number one on BBC TV
"I think that was one of the great performances by a female British player. She should listen to Serena Williams saying that the top 20 is probably setting her ambition a bit low. To me, that was top-10 tennis."
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Andy Muray on Twitter: Retweet if @HeatherWatson92 just made you feel really proud! Favourite if she made you feel really proud!
8,500 retweets and 11,000 favourites as it stands. It's a close one.
Tension got to Serena
Williams 6-2 4-6 7-5 Watson
Tracy Austin
Two-time US Open champion on BBC Radio 5 live
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"Serena was struggling at the end because of the tension. You saw when she won, her knees buckled. She looked absolutely fatigued. If ever there was a time she needed two days off it was this because she did a lot of running. Heather took a lot out of her."
The future's bright for Watson
Williams 6-2 4-6 7-5 Watson
Tim Henman
Former British number one on BBC TV
"In the short term she will be disappointed but when she is able to take a step back and review it and see how her game has improved, and see how she went toe-to-toe with the best player in the world in the biggest tournament, it will give her great confidence.
"She just embraced the whole occasion and she will take so many great points from this match."
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Williams 6-2 4-6 7-5 Watson
Tracy Austin
Two-time US Open champion on BBC TV
"Heather Watson did not let this match go, Serena Williams went out and won it despite having so many people cheering for Heather.
"Every match Serena plays throughout the year she is expected to win and she had to play extremely well. This match was like a semi-final and Heather got so many shots back. Serena is right, Heather has a very bright future."
"It was exhausting to watch, gripping stuff. Today you really didn't know who was going to win until the last ball was struck.
"What a great fighting spirit from Heather. She has entertained everyone and should not be ashamed. For Heather to cope with the atmosphere and feed off the crowd was great."
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Williams 6-2 4-6 7-5 Watson
Jonathan Jurejko
BBC Sport at Wimbledon
A standing ovation as supporters clamber to their feet and applaud Heather Watson's efforts. Not in Centre Court (although they're doing that too) - but on Heather Heap.
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The home fans file out of the exits surrounding the big screen on the side of Court One. The scene is reminiscent of a glum football crowd trudging out of the ground after a home defeat. A scene with more sartorial elegance of course.
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Williams 6-2 4-6 7-5 Watson
Justine Henin
Seven-time Grand Slam champion on BBC Radio 5 live
"Watson will probably not sleep well tonight, she will think about the chances. Serena's humility really impressed me."
Williams through to fourth round
Williams 6-2 4-6 7-5 Watson
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Serena Williams on BBC TV: "I have had some tough losses but that was the toughest match. She played unbelievable and should have won the match. She gave her all and showed what a great player she is.
"She could get beyond the top 20, she is playing really well. She should set her sights higher. She was playing so good there was nothing I could do.
"I will speak to Venus over the weekend. She is in better form than me. She has the advantage over me."
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Williams 6-2 4-6 7-5 Watson
Michael Norbury: Watson should be so proud of her performance today, taking the world number 1 to the limit is an achievement!
Rob Brown: Heather didn't lose that. Serena won it. An incredible performance from @HeatherWatson92 and lets hope she can build on this now.
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At 3-0 up in the deciding set and two breaks of serve to the good, Watson and the nation dared to dream. Is it any consolation to say that, in defeat, Watson produced the finest match of her career?
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Williams 6-2 4-6 7-5 Watson
Lindsay Davenport
1999 Wimbledon champion on BBC TV
"It was a fantastic performance. She (Watson) showed everybody how much she has improved and how much she wants it. There's no shame in going down to possibly the greatest female player of all time."
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Williams beats Watson
Williams 6-2 4-6 7-5 Watson
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Almost silence around Centre as that shot from Serena was called good, as if no-one could believe it was over. But after two hours and 16 minutes it is, and after a wonderful display of courage and skill from the British number one, the old indestructible champ has come through to snatch victory away once again.
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Williams 6-2 4-6 7-5 Watson
Lindsay Davenport
1999 Wimbledon champion on BBC TV
"No question the match of the tournament on the ladies' side. What high quality tennis and so much drama. An amazing effort from both women."
Game, set and match
Williams 6-2 4-6 7-5 Watson
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Wonderful from Serena, moving Watson around like a marionette. Second match point. First serve long. Second in, but Watson is on the defensive - Serena forehand right onto the line, and it's all over, it's all over...
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Williams 6-2 4-6 6-5 Watson
Now then Heather. Big first serve, and Williams can only fend it down to short leg. Another big serve, in behind it to crash away the forehand. Swift return from Serena, forehand drifting wide for 30-15. Oh, heartbreak hotel, a backhand pulled into the tramlines after wonderful work.
30-30. Backhand into the net, match point Serena. Big serve, Serena nets. Serena to the tape, overhead away, another match point. First serve long, second sitting up, Serena into the net, Deuce...
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Williams 6-2 4-6 6-5 Watson *
Jonathan Jurejko
BBC Sport at Wimbledon
You know that 30-strong crowd outside the LTA office on Court One? Make that 130 people. No-one dare move. Trains are being missed, arguments with the partner being created.
"Yes but, my darling, I was watching Heather Watson create/almost create* one of Wimbledon's greatest wins."
* delete as appropriate later
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Williams 6-2 4-6 6-5 Watson *
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Serena's coach Patrick Mouratoglou and hitting partner Robbye Poole are feeling the heat...
"It has turned around significantly. I have been impressed with how Serena has composed herself in an extraordinary atmosphere. Serena has not batted an eyelid. That takes a great strength of character."
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Williams 6-2 4-6 6-5 Watson *
Suffocating tension out there, and Serena aces down the middle. Ace out wide to the forehand side, boomer down the middle, Watson long. How quickly it turns, and Watson must now hold to stay in the championships.
Williams breaks
* Williams 6-2 4-6 5-5 Watson
AFPCopyright: AFP
Watson backhand... into the net, into the net. Williams has broken her, and on we roll...
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Williams 6-2 4-6 4-5 Watson
Massive Williams forehand, advantage Serena.
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* Williams 6-2 4-6 4-5 Watson
ACE! Deuce.
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* Williams 6-2 4-6 4-5 (Watson
Brilliant forehand by Serena, clean winner, advantage Williams.
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Williams 6-2 4-6 4-5 Watson
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Deep forehand into the corner, deuce. Two points away...
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Williams 6-2 4-6 4-5 Watson
Big serve, Serena forehand long, 30-40.
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Williams 6-2 4-6 4-5 Watson
Scampering from Watson, forced wide, backhand into the net, 15-40.
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Williams 6-2 4-6 4-5 Watson
Watto off-balance forehand into the net, 15-30.
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* Williams 6-2 4-6 4-5 Watson
Big serve, Williams nets, 15-15.
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* Williams 6-2 4-6 4-5 (0-15) Watson
ReutersCopyright: Reuters
We'll go point by point, shall we?
Backhand into net, 0-15.
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Williams 6-2 4-6 4-5 Watson *
Jonathan Jurejko
BBC Sport at Wimbledon
"What score is it?" enquiries a well-groomed, silver-haired British lady trying to squint at a screen.
"Watson's serving for the match," pipes up the young man next to her.
"Blimey!" she shrieks.
No more words needed.
Every cheer for the British number one inside Centre Court is being greeted equally as loud in the grounds outside. Carnage.
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*Williams 6-2 4-6 4-5 Watson
Lindsay Davenport
1999 Wimbledon champion on BBC TV
"What an atmosphere out here right now. This crowd is going to do their best to will Heather across the finish line."
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Williams 6-2 4-6 4-5 Watson *
Jonathan Jurejko
BBC Sport at Wimbledon
BBCCopyright: BBC
Can't squeeze your way onto Heather Heap? No bother. Fans are standing anywhere they can around Wimbledon to catch a glimpse of a television screen - including about 30 people outside the LTA office on the side of Court 1. It's like when your dad/grandad told you he had to watch the 1966 World Cup final through his neighbour's living room window.
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Williams 6-2 4-6 4-5 Watson *
Watson chases, chases, chases - wonderful scrambling, 0-15. First serve almost off the court, second long, 0-30. Serena to the net - woefully long, three break points. Watto backhand at Serena's toes - the great champ long, and Watson is serving for the match, is serving for history...
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Williams 6-2 4-6 4-4 Watson*
Lindsay Davenport
1999 Wimbledon champion on BBC TV
"She (Watson) needed that game to get this crowd back into it and get her confidence back."
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* Williams 6-2 4-6 4-4 Watson
Bigger serve from Watto, Serena wide. Big serve again, Serena long. Bedlam, not very polite bedlam.
Match of the Day
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Williams 6-2 4-6 4-3 Watson*
Lindsay Davenport
1999 Wimbledon champion on BBC TV
"There have been two swings of momentum in this match. Heather from 4-3 in the second set and now Serena has reeled off the last four games. She just wouldn't go away. Every game has been a battle in this third set."
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Sir Terry Wogan joins in the Mexican Wave...
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Williams 6-2 4-6 4-3 Watson *
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Serena down the middle with an ace, but she'll go fractionally long with a backhand for deuce. Little glimmers. Is that wide from Serena? By a few blades of pristine grass, but that matters as much as a metre.
Break point - Serena gambling down the line, taking a tiny portion of it and fist-pumping with eyes-ablaze. Watson into the net, and Williams has her nose in front.
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Williams 6-2 4-6 3-3 Watson*
Jonathan Jurejko
BBC Sport at Wimbledon
BBCCopyright: BBC
ATTENTION! Heather Heap is now closed. Wimbledon organisers have decided it is now too packed for late coming fans to join the party. Police are turning people away, one officer saying that it is closed until the end of the Watson v Williams match. Gutted.
Advantage Williams in the seventh...
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Williams 6-2 4-6 3-3 Watson*
PACopyright: PA
Heather Watson's mum Michelle Watson is one of several thousand people on their feet in Centre Court.
Currently deuce in the seventh game...
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Williams 6-2 4-6 3-3 Watson*
Tracy Austin
Two-time US Open champion on BBC Radio 5 live
"You have to hand it to Williams. She was down 3-0, Watson was playing the match of her life."
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Williams 6-2 4-6 3-3 Watson
Lindsay Davenport
1999 Wimbledon champion on BBC TV
"The forehand has just started to fly on Watson. She has started to lose control. She has top get back to accelerating on contact and getting some more spin on that shot."
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* Williams 6-2 4-6 3-3 Watson
PACopyright: PA
Watson breaths deep, wipes the perspiration off her forehead and - gloriously - finds her first-serve mojo. Serena into the net, barely halfway up it for 40-0, but a second serve now, and Serena thumps two forehands away.
Williams in control, hitting to the corners, Watson looking weary, another break point - Serena to the net, and she will pump away the volley.
Four games on the spin for the five-time Wimbledon champion after those six in a row for Watson, and that strange sum means we level up once again.
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Williams 6-2 4-6 2-3 Watson*
Lindsay Davenport
1999 Wimbledon champion on BBC TV
"This is the let-down game for Heather right here. She fought so hard to hold her serve. She has to get her composure back on the changeover."
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Williams 6-2 4-6 2-3 Watson*
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Centre Court finally silenced, fearful that they may just have witnessed the tipping point. Serena finally in fourth gear, rattling through her service game to love after the 10-minute epic of the previous. Watson to her chair, a nation willing her hold serve, hold serve, hold serve,
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*Williams 6-2 4-6 1-3 Watson
Jonathan Jurejko
BBC Sport at Wimbledon
BBCCopyright: BBC
Hundreds of pairs of eyes are transfixed on this giant screen on the side of Court One. Every winning Watson shot, every Williams mistake is being greeted with ear-splitting cheers. Fans are on their feet.
Williams breaks back
* Williams 6-2 4-6 1-3 Watson
PACopyright: PA
Now comes the pressure. Now comes the most dangerous thought of all: I could win this, I could win this... Serena goes cross-court with power for break points. Watto - glorious backhand cross-court to save one. Serena eyeing up a second serve - tugged into the net, remarkably her 26th unforced error.
Serena steps it up - in to the net off a deep and nasty approach, forehand tipped into the spaces, a rebel yell as it sets up another break point. Watson at 57% on her first serve, and she gets lucky as Serena clouts that return marginally long.
Another missed first serve, back to deuce. Watson can't land one, it's like trying to fight Tyson with a broken left hand. Way long on a loose forehand, another break point.
This game feeling pivotal now, and Watson - ach, she's pushed her forehand wide...
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Williams 6-2 4-6 0-3 Watson*
Justine Henin
Seven-time Grand Slam champion on BBC Radio 5 live
"Serena is not moving that well at the moment. She is having trouble making little movements."
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England and Saracens rugby union centre Brad Barritt is hitting every ball as he watches on...
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Williams 6-2 4-6 0-3 Watson*
Lindsay Davenport
1999 Wimbledon champion on BBC TV
"Who would have thought it at 6-2, 4-3 Serena, that Heather would be able to reel off six games in a row with three straight service breaks."
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Sue's successor?
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Williams 6-2 4-6 0-3 Watson
Lindsay Davenport
1999 Wimbledon champion on BBC TV
"How well has Watson started to hit her backhand. It stays so low and flat and slides through the grass."
Watson breaks for second time
Williams 6-2 4-6 0-3 Watson *
Serena on a 23-match winning run at Grand Slam events, should you be struggling to put this into context. Serena with a dinky forehand long, and that's a double fault. Watson has another break point. Serena, first serve... long. Second serve... wide! My giddy aunts - Watson has two breaks of serve, and is three games away from completing the greatest display by a British female player since... since... Sue Barker beating Chris Evert in the late 1970s?
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* Williams 6-2 4-6 0-2 Watson
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This match has not just turned on its head but spun itself round with eyes shut until it no longer knows whether it's Arthur or Martha. Serena fighting, but Watson is hitting the lines and with power - Serena wide, Watto backing up her break. Four holds from history. She couldn't, could she? Could she? Or could she?
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Williams 6-2 4-6 0-1 Watson
Tracy Austin
Two-time US Open champion on BBC Radio 5 live
"Heather maintaining the same level. But can she keep it going deeper into the set."
Super Saturday to Fantastic Friday?
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Rachel T: I love the roar of Centre Court cheering a Brit. COME ON HEATHER!!!!!!
Ashley Wilkinson: YES! @HeatherWatson92 has just had the set of her life. Serena looks out of sorts, finding the net far too often.
Kenny Simpson: This is incredible!! There hasn't been an atmosphere like this on Centre Court since Andy won!
Watson breaks serve
Williams 6-2 4-6 0-1 Watson *
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Mexican wave breaking around Centre Court, and even the Royal Box is joining in. Did Lord Terry of Wogan raise an arm there? Watson a woman transformed, operating at the far edge of her abilities, Serena suddenly adrift - break point again, they're everywhere you look - Serena long, long, long...
Game, set and match
V.Williams 6-3 6-2 Krunic
Venus Williams is encountering none of the problems that her younger sister is suffering on Centre.
The 35-year-old five-time champion is into the fourth round where she will face the winner of Serena v Heather.
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Williams 6-2 4-6 Watson
Lindsay Davenport
1999 Wimbledon champion on BBC TV
"What a moment. So much tension in that last game but what fight from Heather there. She did not serve great but still managed to tough out that game. It's no question she has Serena rattled now."
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Williams 6-2 4-6 Watson
Justine Henin
Seven-time Grand Slam champion on BBC Radio 5 live
"In the third set against Serena she will have to serve better. The tension is getting higher and the nerves will be terrible for everyone."
Game and second set
* Williams 6-2 4-6 Watson
Centre Court going ripe bananas, and why not - Watson slicing Serena sideways, forcing her back, but the second serve is a powerpuff when it needs to be a wrecking-ball. 30-30, and - oh no, a double-fault, only her second of the match but at a stinking moment.
Serena fancies this - deep into the Watson backhand corner, she'll have to work miracles with this - and she has! Cuffed down the line, set point.
Second serve again, Serena striding to mid-court, crashing it away. Deuce. Come on, land a serve... No, another misses. Williams... nets! Second set point in more ways than one. First serve misses. Second.. is biffed into the net. WATSON LEVELS!
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Adam Gallivan: Whatever happens, Watson can hold her head up high. Wonderful play, during second set especially.
Alice Stainer: Excellent pressurising performance by @HeatherWatson92 on Centre. Massive compliment to her that Serena is getting so pumped.
Watson breaks
Williams 6-2 4-5 Watson *
PACopyright: PA
Splendid toe-to-toe from Watto, trading blows, slapping her forehands deep, Serena bemused and - honestly - starting to rock. Break point here, onto the serve, Serena with a wayward forehand - long! Prepare your Watto A Beauty headlines - she's serving for one set all!
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All eyes on Centre. Even those on Court One...
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*Williams 6-2 4-4 Watson
Lindsay Davenport
1999 Wimbledon champion on BBC TV
"For the first time in this tournament she (Williams) is showing more duress. She can be emotional on court and Heather has been able to challenge her in this second set."
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* Williams 6-2 4-4 Watson
APCopyright: AP
Have that, says Britain's Watson - dropper to bring Serena in, gossamer lob to leave her mighty foe stranded at the net. Delightful one-two. Serena responds with a cross-court backhand that could have stopped a tank. Serena now with a floaty dropper of a her own - wide, although she tries to mind-control it in with a subconscious wriggle of the hips. Watson hangs tough with impressively clean hitting, and she's putting on a fine display of pluck and resolve in this second set.
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V Williams 6-3 4-0 Krunic
The winner of Watson v Williams will face the victor on court two. And that is looking increasingly like Serena's sister Venus.
Williams major has just moved a double break up on Aleksandra Krunic having already bagged the first set.
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Williams 6-2 4-3 Watson *
ReutersCopyright: Reuters
Watson digging in now, and if Serena isn't rattled she's certainly pumped - she'll hold to move within two games of the fourth round, but if Watto is going down she's swinging and mauling.
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Williams 6-2 3-3 Watson
Tracy Austin
Two-time US Open champion on BBC Radio 5 live
"You can see what this means to Serena. For her to be shouting in a third round match she knows what it means in this country."
Williams breaks back
* Williams 6-2 3-3 Watson
Cries of dismay as Watson sticks a backhand slicer into the net, and Serena has two break-back points. Watto gets a little lucky on the first as she appears to put racquet onto the ball on the full as it is called out, but an upright second serve is thrashed away, and the advantage lasts no more than a moment.
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Game and first set
Venus Williams 6-3 Krunic
EPACopyright: EPA
A short walk from Centre Court, Venus Williams is playing Aleksandra Krunic on court two and the elder of the Williams sisters is performing well. She's won the first set 6-3 so could meet her sister Serena in the fourth round should both make progress today.
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Williams 6-2 2-3 Watson
Lindsay Davenport
1999 Wimbledon champion on BBC TV
"That was pretty remarkable. This crowd is just waiting for some reason to get involved and Heather gave it them there. A fantastic job of hanging in."
Watson breaks serve
Williams 6-2 2-3 Watson *
Now then. Serena stuffs a straightforward overhead into the net, Watson biffs a backhand down the line and suddenly we are in the unchartered territory of a break point. Delirium among the patrons, swiftly silenced by a howitzer of a serve that the Briton can only top edge to third man. Serena into the net, another break point. First serve long. Second serve... into the net! Double fault, break to Watson, miracles on the march...
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Williams 6-2 2-2 Watson
Justine Henin
Seven-time Grand Slam champion on BBC Radio 5 live
"Serena wants to prove she is the number one in the world. It is a little bit of a problem though that, even when she is sick, she is dominating the tour."
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* Williams 6-2 2-2 Watson
EPACopyright: EPA
That's more like it - solid first serves, a gambler's touch down the lines, and Watson holds - energy now around Centre, could this be a springboard?
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Williams 6-2 2-1 Watson *
Lindsay Davenport
1999 Wimbledon champion on BBC TV
"You have to see a high percentage of returns made when you see a second serve. She (Watson) has a little time on the second serve and has to be effective."
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Williams 6-2 2-1 Watson *
PACopyright: PA
An image we've seen too little of so far this evening, the Watto fistpump, and it stays housed as Serena's relentless first serve steamrollers her through another hold. How does Watson even start to believe she can win, when the evidence is crashing past her, point after point?
Game and first set
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US Open champion Marin Cilic and behemoth American John Isner battle it out in a first-set tie-break and it's the Croatian who comes out on top, grabbing the advantage 7-6 (7-4).
Watson's best point of the match so far, chasing down a drop shot to flick a winner up and over. Serena long with a backhand return, and the crowd greet that hold of serve like a set and a break lead.
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First set summary
Williams 6-2 Watson
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Williams 6-2 1-0 Watson *
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Sir John Hurt in the crowd, and he's either just been told a most excellent joke or he's got a pile of readies on Serena. Clattering serves, crashing forehands, Watson unable to cope with the power and the glory.
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*Williams 6-2 Watson
Jonathan Jurejko
BBC Sport at Wimbledon
Aimee LewisCopyright: Aimee Lewis
Barely a square metre of grass is available to plonk your backside on Heather Heap. In fact, there's barely a square inch on the concrete slabs which surround the plush water features at the top of the manicured slope either.
Subdued atmosphere though - the home fans know that Watson is battling the odds.
"Serena's just so big," exclaims one man. "And Heather is so tiny." The casual fan is putting this contest down to brute force and genetics.
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*Williams 6-2 Watson
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Williams 6-2 Watson
Lindsay Davenport
1999 Wimbledon champion on BBC TV
"That was a statement first set from Serena. She did a masterful job of closing down the crowd and not give them anything to cheer about."
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*Williams 6-2 Watson
Justine Henin
Seven-time Grand Slam champion on BBC Radio 5 live
"Serena has been too good. She did everything perfectly. Can Watson put more pressure on?"
Game and first set
* Williams 6-2 Watson
Serena as focused as we've seen her at Wimbledon in recent years, marching between points, hitting as clean as a jet-wash, chewing up the Watson serve and spitting out the bones. First set gone in 25 minutes, and that mountain just got an awful lot steeper.
Getty ImagesCopyright: Getty Images
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Williams 5-2 Watson*
Lindsay Davenport
1999 Wimbledon champion on BBC TV
"Serena has done such a nice job in this tournament with her footwork. She looks like she has so much time and that's hard to do on grass."
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Williams 5-2 Watson*
119mph on that serve from Serena - you could break concrete with that. Swinging backhand into the Watson forehand corner, and too much on a forehand into the corner. Watson unable to get a finger-hold on the mountain that is the Williams serve.
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* Williams 4-2 Watson
EPACopyright: EPA
Good pluck from Watson, landing her first serve, hitting the lines with her forehand, forcing Serena into two errors. "Let's go Heather, let's go!" yell the Anglophone Aussies, all chant but no name now Lleyton Hewitt has chased his last Wimbledon lost cause.
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Williams 4-1 Watson*
Watson under assault - my word, that serve was around 120mph, and that forehand almost scorches the Centre Court turf as it sizzles by. 17 minutes gone, Serena with a tight grip.
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* Williams 3-1 Watson
Getty ImagesCopyright: Getty Images
Trouble now for Watto, two break points down as a forehand goes wide after Serena smashes away a volley at the net. Mmm, punchy forehand down the line to save one, but Serena's moving on to to this mid-court forehand with a glimmer in her eye - crashed past Watson's flailing backhand, and that's the first break wrenched away.
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C'mon Heather!
Wayne Ellis: Would like to see Watson win, as I'm not a big fan of Serena. Realistically though, I don't see her winning more than four games.
Natalie Bramall: What a match this is going to be between Heather and Serena!! Come on Heather!!
David: Come on Heather. Do yourself proud!
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Williams 2-1 Watson*
Jonathan Jurejko
BBC Sport at Wimbledon
What's that coming over the hill? It's not a monster. It's not a monster. It's people gathering on Henman Hill/ Murray Mound* of course! Hundreds are primed to focus on the big screen and see if Heather Watson can cause an upset.
Never mind those Henman and Murray characters. I'm renaming this Heather Heap this afternoon. At least until she loses.
If she loses, Jonathan, if.
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Williams 2-1 Watson *
Getty ImagesCopyright: Getty Images
Serena holds to love at a canter, but that's to be expected. Watson goes to her chair at the changeover, white golf visor in place, and seeks solace in a few swigs of sponsor's product.
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It looks like Roger Federer is enjoying his day off. No idea what all those emoticons mean though...
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* Williams 1-1 Watson
"If you love Heather Watson, clap your hands," sing the Aussies, giving Centre Court the air of a cub camp after one too many eggy breads. Yes Heather, an ace down the middle. Williams with a forehand onto the tape, but her backhand return is on Watson before she can adjust her twinkle-toes, and that is frightening power off the Williams backhand - Watson barely twitching as the second serve comes back at her like a cruel boomerang. Better first serve, on the board to raucous applause.
ReutersCopyright: Reuters
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Serena Williams v Heather Watson
Lindsay Davenport
1999 Wimbledon champion on BBC TV
"Heather has earned her way here and that's what makes it so great. It's not a first-round match . It's a third-round match and she's had some great wins to get here. Hopefully the crowd give her some energy and help her play the match of her life."
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Williams 1-0 Watson *
Oof - punishing start from Serena, crushing a forehand at Watson's feet. Big serve out wide - plus ca change - but that's a punchy riposte from the Briton, snagging her first point with a brisk forehand drive that Williams can only biff long. Hammering serve, game gone.
* denotes next server
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Getty ImagesCopyright: Getty Images
Perfect British summer's day on Centre Court - warm without being blistering, a light breeze to cool a beaded brow, not a sniff of a shower for miles around. Shall we?
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Serena Williams v Heather Watson
Tracy Austin
Two-time US Open champion on BBC TV
"Serena has all the pressure. She's going for all the majors in one year. It's very important for Heather to get a quick start and get some first serves in because sometimes Serena is a slow starter. That way she will also be able to get the crowd even more involved."
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Huge task for Britain's Heather Watson here, coming eyeball to eyeball with a woman who has won 20 Grand Slam singles titles, five of them on this very court. Watson has never before made it past the third round of a Grand Slam tournament, but miracles do happen - there's a load of Aussie fans down there who are trying to start a mass singalong in honour of the British number one. Hands across the ocean.
Former British tennis player Greg Rusedski - and advisor to Heather Watson - on BBC Radio 5 Live: "Heather Watson has had a great Wimbledon already. All the pressure is on Serena, she is going to have a patriotic crowd behind her. She has to enjoy the experience, keep the contest close early on and she has a chance. The mind plays a key role, have to find a way to get those nerves out because everyone is going to be nervous."
AFPCopyright: AFP
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Sharapova 6-4 6-3 Begu
More from Maria Sharapova, talking on BBC Two: "I got broken in the first game then played good tennis at 4-4 to go up 5-4. The first set gave me confidence, played good in the second. I knew Begu would not go anywhere.
"Obviously you expect to go further in the tournament, expect better things for yourself. You have to raise your level as you progress through the tournament. There is only one champion in the end and the one who raises their game is the champion."
Top videos
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Plenty of highlights from Wimbledon already today. Have a look at some of our top videos.
Afternoon/early evening, all - Fordyce here. When does the afternoon officially end and the evening begin? Does it alter fractionally each day with the phases of the moon? Hang on, Watto's on court...
Get involved #bbctennis
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Novak Djokovic on BBC TV: "Great so far. I was hoping I could play better and better as tournament progresses and that is what is happening. As we are moving on, I feel more confident.
"A very good serve today, I won a lot of free points and that takes away a lot of pressure. Maybe it looks like I haven't been tested but I have. I played a couple of good players.
"When you are on the court you have to earn it. It is very close to where I want to be. It will get harder. Kevin Anderson is a very good grass court player, the opponents will get tougher and I have to be on top of my game.
"This gentleman gave me his artificial leg and my signature will make him feel better."
Latest scores
BBC SportCopyright: BBC Sport
Three matches are set to start, which has caused a Piccadilly Circus-style traffic bedlam on the concourse. Serena Williams and Heather Watson due to arrive on Centre Court, of course, while Marin Cilic and John Isner are warming up on Court One and Aleksandra Krunic and Venus Williams are set to start on court two.
Djokovic into fourth round
Djokovic 6-3 6-3 6-3 Tomic
ReutersCopyright: Reuters
In fact the only curveball for the Serb is the one female fan who grabs him for a kiss among the usual ball-signing and selfies antics. "It's been great" he tells BBC TV about his first week in SW19.
Quick changeover down on Centre Court ahead of the next match - British number one Heather Watson against world number one Serena Williams.
And that means a change in our commentary box too - here's Tom Fordyce to talk you through the action...
Game, set and match - Djokovic
Djokovic 6-3 6-3 6-3 Tomic
All over! A cheeky grin is plastered all over the face of Novak Djokovic as he stands in the middle of Centre Court, soaking up the acclaim from those fans on their feet. Routine stuff for the defending champion.
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*Djokovic 6-3 6-3 5-3 Tomic
Novak Djokovic is going to have move into the last 16 on his own terms. Bernard Tomic rallies to hold to love. Far too late...
Sharapova 'has belief'
"You have to have belief. You don't work all those hours if you don't have belief in yourself," says Maria Sharapova of her title-winning chances.
Getty ImagesCopyright: Getty Images
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Djokovic 6-3 6-3 5-2 Tomic*
Defending champion Novak Djokovic looks as though as he has hardly broken sweat after unleashing another ace, again down the T, to move within one game of the match. These are ominous signs for Bernard Tomic and, perhaps, the rest of the men's singles draw.
Game, set and match
Sharapova 6-4 6-3 Begu
ReutersCopyright: Reuters
Irina-Camelia Begu slaps a forehand into the tramlines and that's the cue for Maria Sharapova to raise her arms triumphantly in the air and wave to the Court One crowd.
Djokovic breaks
*Djokovic 6-3 6-3 4-2 Tomic
AFPCopyright: AFP
The Tomic serve has been buckling - and now it gives way. The Australian, receiving vocal support by a throng of green-and-gold-clothed fans at courtside, saves two break points and then any other chance for the Serb in deuce.
But a third great escape ends there. Djokovic has the 22-year-old scampering from side to side across the baseline, with a limp backhand into the tape putting the world number one within touching distance of the last 16.
'Dimitrov will come back. He has a great future'
Dimitrov 3-6 4-6 4-6 Gasquet
Frenchman Richard Gasquet, who defeated 11th seed Grigor Dimitrov 6-3 6-4 6-4 on Centre Court and will play Nick Kyrgios in the last 16, has been talking to BBC Radio 5 live.
"It's important to win a match on the biggest court in the world so I'm really happy with the way I played," says Gasquet.
"He served well but I didn't lose my serve and didn't lose a set. Maybe he is not in the best form but of course he will come back. He has a great future and is still young.
"It will be a tough match against Kyrgios. Last year we played an incredible match where I had nine match points and could not do it. He is one of the best newcomers on the tour but I will try my best."
Live Reporting
Mike Henson, Jonathan Jurejko and Tom Fordyce
All times stated are UK
Get involved
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I'll leave you in their capable hands.
Just click on the live coverage tab on this page to have a little sit back and review of the day....
See you tomorrow.
Wimbledon 2Day
Wimbledon 2Day is just ramping up on BBC Two.
Who have they got in today? Let's see.
Cue theme music: Ba-ba-baba, ba-ba-baba, ba-ba baba, baaa!
It is Tim Henman and John McEnroe who are going to talk us through the action and the goings-on at Wimbledon.
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Catch up on your reading
Now you've had chance to catch your breath, here's a quick reminder of today's top stories from day five at Wimbledon.
Heather Watson loses in a thriller to Serena Williams
Novak Djokovic and Stan Wawrinka cruise into the fourth round
Maria Sharapova and Venus Williams head into week two
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Video stars
Catch up with some of the day's brief highlights, including five of the best from some of the big winners, by going to the tennis home page.
Order of Play
Court three - 11:30 BST start
Order of Play
Court One - 13:00 BST start
Caroline Wozniacki (Den) [5] vs Camila Giorgi (Ita) [31]
James Ward (GBR) vs Vasek Pospisil (Can)
Gael Monfils (Fra) [18] vs Gilles Simon (Fra) [12]
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Ah, I never gave you the rest of tomorrow's schedule did I?
Right, here comes a quick blast of Court One and, because it looks interesting, court three.
'We will try to fix anything'
Williams 6-2 4-6 7-5 Watson
BBC Radio 5 live
More quotes from Heather Watson's coach Diego Veronelli. He tells BBC Radio 5 live: "There are a lot of good things to take from this. Right now, she said she didn't play well enough in the big moments.
"The difference was very little and we will watch the game over and try to fix anything we need to."
'Heather had been dreaming of this day'
Williams 6-2 4-6 7-5 Watson
BBC Radio 5 live
Heather Watson's coach, Diego Veronelli, has been talking to BBC Radio 5 live. He says: "I'm so proud. There are a lot of positives to take but it is hard to talk. I felt she deserved to win but you have to win the last point.
"That game at 3-0, if she had taken it and gone 4-0 then that would've been crucial, but once it was 3-1 Serena got back into the match.
"We both said before the match that we don't just want a decent match, we want to win. Heather has been dreaming of this day since she was 11 or 12 years old - to play the world number one on Centre Court and she was right there, but right now it's hard to speak."
"Super, super close"
Williams 6-2 4-6 7-5 Watson
Heather Watson: "Maybe I will reflect on this more positively in a few weeks time, but maybe not.
"I am disappointed that I did not achieve my goal of making the second week of a Grand Slam. But I was super, super close and after the second set I played very smart."
Beat Serena next time?
Williams 6-2 4-6 7-5 Watson
Heather Watson: "I know how I'd play if I played her again. I wish I could have played one point differently to see how it might have changed things."
"Best atmosphere I have ever played in"
Williams 6-2 4-6 7-5 Watson
Heather Watson: "I was not handling her pace very well at the start and I was not sticking to the game plan I had although I don't think that she let me to be fair.
"It was the best atmosphere that I have played in at Wimbledon. I didn't get tired during the match, that is one of my strengths and I tried to use that.
"I got use to the feel of the ball off her racquet - it was hard and heavy - and hopefully that will help me when I play her again."
'I can compete with the best'
Williams 6-2 4-6 7-5 Watson
Heather Watson: "I had chances and it was so close with points that could have gone either way but when she needs to hit a winner she does it.
"But I've learned I can compete with the best in the world."
'I'm disappointed'
Williams 6-2 4-6 7-5 Watson
Heather Watson: "I was two points away from winning that match so I am pretty disappointed. The atmosphere was fantastic and pushed me on, but I just wished I could have closed it out.
"I wouldn't call losing the greatest day of my career. I am pleased that I gave myself the chance to play the best in the world and gave myself the opportunity to beat her. I didn't take it, but I hope the experience will help me next time.
"She had a lot of free points on her serve."
Hear from Heather
Heather Watson is now talking to the press.... here's what she has to say...
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Centre Court - 13:00 BST start
Samuel Groth (Aus) vs Roger Federer (Sui) [2]
Jelena Jankovic (Ser) [28] vs Petra Kvitova (Cze) [2]
Andreas Seppi (Ita) [25] vs Andy Murray (GBR) [3]
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Caught your breathe? Pulse rate returning to something near normal? Good, don't take down the bunting though...
There are a couple of Brits could use some of that stirring support tomorrow on the show courts.
Here is the order of play.
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Williams 6-2 4-6 7-5 Watson
Justine Henin
Seven-time Grand Slam champion on BBC Radio 5 live
"Not only did Heather hit the ball very well, she played a perfect match tactically. She was very good in defence and tried to put some pressure on Serena. But what Heather missed was hitting more winners. To make the difference she could be more aggressive."
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Choose your match for some late-night action
Heather Watson may just have bowed out in heroic fashion to Serena Williams but the live action hasn't finished yet.
You can still choose your match by going to the tennis home page.
US Open champion Marin Cilic and John Isner are currently slugging it out on Court One. Cilic leads two sets to one and it is 5-5 in the fourth.
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Williams 6-2 4-6 7-5 Watson
Jeff Tarango
Former professional tennis player on BBC Radio 5 live
"Serena had a bad day and she somehow pulled it through. I expect a lot more drama and a lot more effort from Serena as the tournament goes on."
'Heather's backhand was world class'
Williams 6-2 4-6 7-5 Watson
More quotes from Great Britain's Fed Cup captain Judy Murray.
"After the first set was so one-sided, Heather's backhand was world class and she can take a lot of encouragement from that performance. Hopefully it will spur her on to greater things," Murray tells BBC Radio 5 live.
"I hope she can get over it quite quickly as this was the first time she has been in such a position against the best player in the world. But if Heather is realistic, she will use that to her advantage and say 'I can hang with the best of them'."
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'This will motivate Watson'
Williams 6-2 4-6 7-5 Watson
Annabel Croft
Former British number one on BBC Radio 5 live
"I definitely think she could be a top 20 player. I think Heather has a similar game to Halep and she is a great, great match winner.
"She backs herself a lot. Heather gets so many balls back into play, her style is about making you play a lot of balls.
"We saw so much positive stuff and I think this will motivate her to work even harder."
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Former British number one Katie O'Brien on Twitter
'Heather will be devastated'
Williams 6-2 4-6 7-5 Watson
BBC Radio 5 live
Great Britain's Fed Cup captain Judy Murray has been talking to BBC Radio 5 live. She says: "It was an amazing match. Heather was blown away in the first set and Serena was serving big and hitting big off the ground. But Heather dug in, there were a lot of drop shots and short balls and she disrupted Serena's rhythm.
"To be 3-0 up in the third and serving for the match, I think Heather will be devastated to not come away with a victory as she was so, so close. But it's such an encouraging performance as she never gave up."
Watson should gain confidence
Williams 6-2 4-6 7-5 Watson
Tracy Austin
Two-time US Open champion on BBC Radio 5 live
"Having gone through this I'd put more money on Serena. Annabel said Heather wouldn't sleep tonight but she won't sleep for another month. This will give Heather a lot of confidence, she can get at least top 20 this year."
Top-10 tennis from Watson
Williams 6-2 4-6 7-5 Watson
Sam Smith
Former British number one on BBC TV
"I think that was one of the great performances by a female British player. She should listen to Serena Williams saying that the top 20 is probably setting her ambition a bit low. To me, that was top-10 tennis."
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Andy Muray on Twitter: Retweet if @HeatherWatson92 just made you feel really proud! Favourite if she made you feel really proud!
8,500 retweets and 11,000 favourites as it stands. It's a close one.
Tension got to Serena
Williams 6-2 4-6 7-5 Watson
Tracy Austin
Two-time US Open champion on BBC Radio 5 live
"Serena was struggling at the end because of the tension. You saw when she won, her knees buckled. She looked absolutely fatigued. If ever there was a time she needed two days off it was this because she did a lot of running. Heather took a lot out of her."
The future's bright for Watson
Williams 6-2 4-6 7-5 Watson
Tim Henman
Former British number one on BBC TV
"In the short term she will be disappointed but when she is able to take a step back and review it and see how her game has improved, and see how she went toe-to-toe with the best player in the world in the biggest tournament, it will give her great confidence.
"She just embraced the whole occasion and she will take so many great points from this match."
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Williams 6-2 4-6 7-5 Watson
Tracy Austin
Two-time US Open champion on BBC TV
"Heather Watson did not let this match go, Serena Williams went out and won it despite having so many people cheering for Heather.
"Every match Serena plays throughout the year she is expected to win and she had to play extremely well. This match was like a semi-final and Heather got so many shots back. Serena is right, Heather has a very bright future."
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Williams 6-2 4-6 7-5 Watson
Annabel Croft
Former British number one on BBC Radio 5 live
"It was exhausting to watch, gripping stuff. Today you really didn't know who was going to win until the last ball was struck.
"What a great fighting spirit from Heather. She has entertained everyone and should not be ashamed. For Heather to cope with the atmosphere and feed off the crowd was great."
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Williams 6-2 4-6 7-5 Watson
Jonathan Jurejko
BBC Sport at Wimbledon
A standing ovation as supporters clamber to their feet and applaud Heather Watson's efforts. Not in Centre Court (although they're doing that too) - but on Heather Heap.
The home fans file out of the exits surrounding the big screen on the side of Court One. The scene is reminiscent of a glum football crowd trudging out of the ground after a home defeat. A scene with more sartorial elegance of course.
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Williams 6-2 4-6 7-5 Watson
Justine Henin
Seven-time Grand Slam champion on BBC Radio 5 live
"Watson will probably not sleep well tonight, she will think about the chances. Serena's humility really impressed me."
Williams through to fourth round
Williams 6-2 4-6 7-5 Watson
Serena Williams on BBC TV: "I have had some tough losses but that was the toughest match. She played unbelievable and should have won the match. She gave her all and showed what a great player she is.
"She could get beyond the top 20, she is playing really well. She should set her sights higher. She was playing so good there was nothing I could do.
"I will speak to Venus over the weekend. She is in better form than me. She has the advantage over me."
Get involved via #bbctennis
Williams 6-2 4-6 7-5 Watson
Michael Norbury: Watson should be so proud of her performance today, taking the world number 1 to the limit is an achievement!
Rob Brown: Heather didn't lose that. Serena won it. An incredible performance from @HeatherWatson92 and lets hope she can build on this now.
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At 3-0 up in the deciding set and two breaks of serve to the good, Watson and the nation dared to dream. Is it any consolation to say that, in defeat, Watson produced the finest match of her career?
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Williams 6-2 4-6 7-5 Watson
Lindsay Davenport
1999 Wimbledon champion on BBC TV
"It was a fantastic performance. She (Watson) showed everybody how much she has improved and how much she wants it. There's no shame in going down to possibly the greatest female player of all time."
Get involved via #bbctennis
Williams beats Watson
Williams 6-2 4-6 7-5 Watson
Almost silence around Centre as that shot from Serena was called good, as if no-one could believe it was over. But after two hours and 16 minutes it is, and after a wonderful display of courage and skill from the British number one, the old indestructible champ has come through to snatch victory away once again.
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Williams 6-2 4-6 7-5 Watson
Lindsay Davenport
1999 Wimbledon champion on BBC TV
"No question the match of the tournament on the ladies' side. What high quality tennis and so much drama. An amazing effort from both women."
Game, set and match
Williams 6-2 4-6 7-5 Watson
Wonderful from Serena, moving Watson around like a marionette. Second match point. First serve long. Second in, but Watson is on the defensive - Serena forehand right onto the line, and it's all over, it's all over...
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Williams 6-2 4-6 6-5 Watson
Now then Heather. Big first serve, and Williams can only fend it down to short leg. Another big serve, in behind it to crash away the forehand. Swift return from Serena, forehand drifting wide for 30-15. Oh, heartbreak hotel, a backhand pulled into the tramlines after wonderful work.
30-30. Backhand into the net, match point Serena. Big serve, Serena nets. Serena to the tape, overhead away, another match point. First serve long, second sitting up, Serena into the net, Deuce...
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Williams 6-2 4-6 6-5 Watson *
Jonathan Jurejko
BBC Sport at Wimbledon
You know that 30-strong crowd outside the LTA office on Court One? Make that 130 people. No-one dare move. Trains are being missed, arguments with the partner being created.
"Yes but, my darling, I was watching Heather Watson create/almost create* one of Wimbledon's greatest wins."
* delete as appropriate later
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Williams 6-2 4-6 6-5 Watson *
Serena's coach Patrick Mouratoglou and hitting partner Robbye Poole are feeling the heat...
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Williams 6-2 4-6 6-5 Watson *
Annabel Croft
Former British number one on BBC Radio 5 live
"It has turned around significantly. I have been impressed with how Serena has composed herself in an extraordinary atmosphere. Serena has not batted an eyelid. That takes a great strength of character."
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Williams 6-2 4-6 6-5 Watson *
Suffocating tension out there, and Serena aces down the middle. Ace out wide to the forehand side, boomer down the middle, Watson long. How quickly it turns, and Watson must now hold to stay in the championships.
Williams breaks
* Williams 6-2 4-6 5-5 Watson
Watson backhand... into the net, into the net. Williams has broken her, and on we roll...
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Williams 6-2 4-6 4-5 Watson
Massive Williams forehand, advantage Serena.
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* Williams 6-2 4-6 4-5 Watson
ACE! Deuce.
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* Williams 6-2 4-6 4-5 (Watson
Brilliant forehand by Serena, clean winner, advantage Williams.
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Williams 6-2 4-6 4-5 Watson
Deep forehand into the corner, deuce. Two points away...
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Williams 6-2 4-6 4-5 Watson
Big serve, Serena forehand long, 30-40.
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Williams 6-2 4-6 4-5 Watson
Scampering from Watson, forced wide, backhand into the net, 15-40.
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Williams 6-2 4-6 4-5 Watson
Watto off-balance forehand into the net, 15-30.
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* Williams 6-2 4-6 4-5 Watson
Big serve, Williams nets, 15-15.
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* Williams 6-2 4-6 4-5 (0-15) Watson
We'll go point by point, shall we?
Backhand into net, 0-15.
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Williams 6-2 4-6 4-5 Watson *
Jonathan Jurejko
BBC Sport at Wimbledon
"What score is it?" enquiries a well-groomed, silver-haired British lady trying to squint at a screen.
"Watson's serving for the match," pipes up the young man next to her.
"Blimey!" she shrieks.
No more words needed.
Every cheer for the British number one inside Centre Court is being greeted equally as loud in the grounds outside. Carnage.
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*Williams 6-2 4-6 4-5 Watson
Lindsay Davenport
1999 Wimbledon champion on BBC TV
"What an atmosphere out here right now. This crowd is going to do their best to will Heather across the finish line."
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Williams 6-2 4-6 4-5 Watson *
Jonathan Jurejko
BBC Sport at Wimbledon
Can't squeeze your way onto Heather Heap? No bother. Fans are standing anywhere they can around Wimbledon to catch a glimpse of a television screen - including about 30 people outside the LTA office on the side of Court 1. It's like when your dad/grandad told you he had to watch the 1966 World Cup final through his neighbour's living room window.
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Williams 6-2 4-6 4-5 Watson *
Watson chases, chases, chases - wonderful scrambling, 0-15. First serve almost off the court, second long, 0-30. Serena to the net - woefully long, three break points. Watto backhand at Serena's toes - the great champ long, and Watson is serving for the match, is serving for history...
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Williams 6-2 4-6 4-4 Watson*
Lindsay Davenport
1999 Wimbledon champion on BBC TV
"She (Watson) needed that game to get this crowd back into it and get her confidence back."
Get involved via #bbctennis
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* Williams 6-2 4-6 4-4 Watson
Bigger serve from Watto, Serena wide. Big serve again, Serena long. Bedlam, not very polite bedlam.
Match of the Day
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Williams 6-2 4-6 4-3 Watson*
Lindsay Davenport
1999 Wimbledon champion on BBC TV
"There have been two swings of momentum in this match. Heather from 4-3 in the second set and now Serena has reeled off the last four games. She just wouldn't go away. Every game has been a battle in this third set."
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Sir Terry Wogan joins in the Mexican Wave...
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Williams 6-2 4-6 4-3 Watson *
Serena down the middle with an ace, but she'll go fractionally long with a backhand for deuce. Little glimmers. Is that wide from Serena? By a few blades of pristine grass, but that matters as much as a metre.
Break point - Serena gambling down the line, taking a tiny portion of it and fist-pumping with eyes-ablaze. Watson into the net, and Williams has her nose in front.
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Williams 6-2 4-6 3-3 Watson*
Jonathan Jurejko
BBC Sport at Wimbledon
ATTENTION! Heather Heap is now closed. Wimbledon organisers have decided it is now too packed for late coming fans to join the party. Police are turning people away, one officer saying that it is closed until the end of the Watson v Williams match. Gutted.
Advantage Williams in the seventh...
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Williams 6-2 4-6 3-3 Watson*
Heather Watson's mum Michelle Watson is one of several thousand people on their feet in Centre Court.
Currently deuce in the seventh game...
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Williams 6-2 4-6 3-3 Watson*
Tracy Austin
Two-time US Open champion on BBC Radio 5 live
"You have to hand it to Williams. She was down 3-0, Watson was playing the match of her life."
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Williams 6-2 4-6 3-3 Watson
Lindsay Davenport
1999 Wimbledon champion on BBC TV
"The forehand has just started to fly on Watson. She has started to lose control. She has top get back to accelerating on contact and getting some more spin on that shot."
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* Williams 6-2 4-6 3-3 Watson
Watson breaths deep, wipes the perspiration off her forehead and - gloriously - finds her first-serve mojo. Serena into the net, barely halfway up it for 40-0, but a second serve now, and Serena thumps two forehands away.
Williams in control, hitting to the corners, Watson looking weary, another break point - Serena to the net, and she will pump away the volley.
Four games on the spin for the five-time Wimbledon champion after those six in a row for Watson, and that strange sum means we level up once again.
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Williams 6-2 4-6 2-3 Watson*
Lindsay Davenport
1999 Wimbledon champion on BBC TV
"This is the let-down game for Heather right here. She fought so hard to hold her serve. She has to get her composure back on the changeover."
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Williams 6-2 4-6 2-3 Watson*
Centre Court finally silenced, fearful that they may just have witnessed the tipping point. Serena finally in fourth gear, rattling through her service game to love after the 10-minute epic of the previous. Watson to her chair, a nation willing her hold serve, hold serve, hold serve,
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*Williams 6-2 4-6 1-3 Watson
Jonathan Jurejko
BBC Sport at Wimbledon
Hundreds of pairs of eyes are transfixed on this giant screen on the side of Court One. Every winning Watson shot, every Williams mistake is being greeted with ear-splitting cheers. Fans are on their feet.
Williams breaks back
* Williams 6-2 4-6 1-3 Watson
Now comes the pressure. Now comes the most dangerous thought of all: I could win this, I could win this... Serena goes cross-court with power for break points. Watto - glorious backhand cross-court to save one. Serena eyeing up a second serve - tugged into the net, remarkably her 26th unforced error.
Serena steps it up - in to the net off a deep and nasty approach, forehand tipped into the spaces, a rebel yell as it sets up another break point. Watson at 57% on her first serve, and she gets lucky as Serena clouts that return marginally long.
Another missed first serve, back to deuce. Watson can't land one, it's like trying to fight Tyson with a broken left hand. Way long on a loose forehand, another break point.
This game feeling pivotal now, and Watson - ach, she's pushed her forehand wide...
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Williams 6-2 4-6 0-3 Watson*
Justine Henin
Seven-time Grand Slam champion on BBC Radio 5 live
"Serena is not moving that well at the moment. She is having trouble making little movements."
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England and Saracens rugby union centre Brad Barritt is hitting every ball as he watches on...
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Williams 6-2 4-6 0-3 Watson*
Lindsay Davenport
1999 Wimbledon champion on BBC TV
"Who would have thought it at 6-2, 4-3 Serena, that Heather would be able to reel off six games in a row with three straight service breaks."
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Sue's successor?
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Williams 6-2 4-6 0-3 Watson
Lindsay Davenport
1999 Wimbledon champion on BBC TV
"How well has Watson started to hit her backhand. It stays so low and flat and slides through the grass."
Watson breaks for second time
Williams 6-2 4-6 0-3 Watson *
Serena on a 23-match winning run at Grand Slam events, should you be struggling to put this into context. Serena with a dinky forehand long, and that's a double fault. Watson has another break point. Serena, first serve... long. Second serve... wide! My giddy aunts - Watson has two breaks of serve, and is three games away from completing the greatest display by a British female player since... since... Sue Barker beating Chris Evert in the late 1970s?
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* Williams 6-2 4-6 0-2 Watson
This match has not just turned on its head but spun itself round with eyes shut until it no longer knows whether it's Arthur or Martha. Serena fighting, but Watson is hitting the lines and with power - Serena wide, Watto backing up her break. Four holds from history. She couldn't, could she? Could she? Or could she?
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Williams 6-2 4-6 0-1 Watson
Tracy Austin
Two-time US Open champion on BBC Radio 5 live
"Heather maintaining the same level. But can she keep it going deeper into the set."
Super Saturday to Fantastic Friday?
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Rachel T: I love the roar of Centre Court cheering a Brit. COME ON HEATHER!!!!!!
Ashley Wilkinson: YES! @HeatherWatson92 has just had the set of her life. Serena looks out of sorts, finding the net far too often.
Kenny Simpson: This is incredible!! There hasn't been an atmosphere like this on Centre Court since Andy won!
Watson breaks serve
Williams 6-2 4-6 0-1 Watson *
Mexican wave breaking around Centre Court, and even the Royal Box is joining in. Did Lord Terry of Wogan raise an arm there? Watson a woman transformed, operating at the far edge of her abilities, Serena suddenly adrift - break point again, they're everywhere you look - Serena long, long, long...
Game, set and match
V.Williams 6-3 6-2 Krunic
Venus Williams is encountering none of the problems that her younger sister is suffering on Centre.
The 35-year-old five-time champion is into the fourth round where she will face the winner of Serena v Heather.
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Williams 6-2 4-6 Watson
Lindsay Davenport
1999 Wimbledon champion on BBC TV
"What a moment. So much tension in that last game but what fight from Heather there. She did not serve great but still managed to tough out that game. It's no question she has Serena rattled now."
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Williams 6-2 4-6 Watson
Justine Henin
Seven-time Grand Slam champion on BBC Radio 5 live
"In the third set against Serena she will have to serve better. The tension is getting higher and the nerves will be terrible for everyone."
Game and second set
* Williams 6-2 4-6 Watson
Centre Court going ripe bananas, and why not - Watson slicing Serena sideways, forcing her back, but the second serve is a powerpuff when it needs to be a wrecking-ball. 30-30, and - oh no, a double-fault, only her second of the match but at a stinking moment.
Serena fancies this - deep into the Watson backhand corner, she'll have to work miracles with this - and she has! Cuffed down the line, set point.
Second serve again, Serena striding to mid-court, crashing it away. Deuce. Come on, land a serve... No, another misses. Williams... nets! Second set point in more ways than one. First serve misses. Second.. is biffed into the net. WATSON LEVELS!
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Adam Gallivan: Whatever happens, Watson can hold her head up high. Wonderful play, during second set especially.
Alice Stainer: Excellent pressurising performance by @HeatherWatson92 on Centre. Massive compliment to her that Serena is getting so pumped.
Watson breaks
Williams 6-2 4-5 Watson *
Splendid toe-to-toe from Watto, trading blows, slapping her forehands deep, Serena bemused and - honestly - starting to rock. Break point here, onto the serve, Serena with a wayward forehand - long! Prepare your Watto A Beauty headlines - she's serving for one set all!
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All eyes on Centre. Even those on Court One...
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*Williams 6-2 4-4 Watson
Lindsay Davenport
1999 Wimbledon champion on BBC TV
"For the first time in this tournament she (Williams) is showing more duress. She can be emotional on court and Heather has been able to challenge her in this second set."
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* Williams 6-2 4-4 Watson
Have that, says Britain's Watson - dropper to bring Serena in, gossamer lob to leave her mighty foe stranded at the net. Delightful one-two. Serena responds with a cross-court backhand that could have stopped a tank. Serena now with a floaty dropper of a her own - wide, although she tries to mind-control it in with a subconscious wriggle of the hips. Watson hangs tough with impressively clean hitting, and she's putting on a fine display of pluck and resolve in this second set.
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V Williams 6-3 4-0 Krunic
The winner of Watson v Williams will face the victor on court two. And that is looking increasingly like Serena's sister Venus.
Williams major has just moved a double break up on Aleksandra Krunic having already bagged the first set.
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Williams 6-2 4-3 Watson *
Watson digging in now, and if Serena isn't rattled she's certainly pumped - she'll hold to move within two games of the fourth round, but if Watto is going down she's swinging and mauling.
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Williams 6-2 3-3 Watson
Tracy Austin
Two-time US Open champion on BBC Radio 5 live
"You can see what this means to Serena. For her to be shouting in a third round match she knows what it means in this country."
Williams breaks back
* Williams 6-2 3-3 Watson
Cries of dismay as Watson sticks a backhand slicer into the net, and Serena has two break-back points. Watto gets a little lucky on the first as she appears to put racquet onto the ball on the full as it is called out, but an upright second serve is thrashed away, and the advantage lasts no more than a moment.
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Game and first set
Venus Williams 6-3 Krunic
A short walk from Centre Court, Venus Williams is playing Aleksandra Krunic on court two and the elder of the Williams sisters is performing well. She's won the first set 6-3 so could meet her sister Serena in the fourth round should both make progress today.
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Williams 6-2 2-3 Watson
Lindsay Davenport
1999 Wimbledon champion on BBC TV
"That was pretty remarkable. This crowd is just waiting for some reason to get involved and Heather gave it them there. A fantastic job of hanging in."
Watson breaks serve
Williams 6-2 2-3 Watson *
Now then. Serena stuffs a straightforward overhead into the net, Watson biffs a backhand down the line and suddenly we are in the unchartered territory of a break point. Delirium among the patrons, swiftly silenced by a howitzer of a serve that the Briton can only top edge to third man. Serena into the net, another break point. First serve long. Second serve... into the net! Double fault, break to Watson, miracles on the march...
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Williams 6-2 2-2 Watson
Justine Henin
Seven-time Grand Slam champion on BBC Radio 5 live
"Serena wants to prove she is the number one in the world. It is a little bit of a problem though that, even when she is sick, she is dominating the tour."
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* Williams 6-2 2-2 Watson
That's more like it - solid first serves, a gambler's touch down the lines, and Watson holds - energy now around Centre, could this be a springboard?
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Williams 6-2 2-1 Watson *
Lindsay Davenport
1999 Wimbledon champion on BBC TV
"You have to see a high percentage of returns made when you see a second serve. She (Watson) has a little time on the second serve and has to be effective."
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Williams 6-2 2-1 Watson *
An image we've seen too little of so far this evening, the Watto fistpump, and it stays housed as Serena's relentless first serve steamrollers her through another hold. How does Watson even start to believe she can win, when the evidence is crashing past her, point after point?
Game and first set
US Open champion Marin Cilic and behemoth American John Isner battle it out in a first-set tie-break and it's the Croatian who comes out on top, grabbing the advantage 7-6 (7-4).
BBC coverage
Don't forget there is plenty of live action to watch on the BBC Sport website now.
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* Williams 6-2 1-1 Watson
Watson's best point of the match so far, chasing down a drop shot to flick a winner up and over. Serena long with a backhand return, and the crowd greet that hold of serve like a set and a break lead.
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BBC Music: We THINK we've just nailed it with #tennistunes... 'Becker the Devil You Know.
Stu Foster: Champagne Sharapova.
QuiteEarlyOneMorning: A Drop (shot) in Time - Mercury Rev.
We want to know your tennis-related songs via #Tennistunes and you can check out the players' @bbcmusic playlists. You can also post on Facebook here.
First set summary
Williams 6-2 Watson
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Williams 6-2 1-0 Watson *
Sir John Hurt in the crowd, and he's either just been told a most excellent joke or he's got a pile of readies on Serena. Clattering serves, crashing forehands, Watson unable to cope with the power and the glory.
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*Williams 6-2 Watson
Jonathan Jurejko
BBC Sport at Wimbledon
Barely a square metre of grass is available to plonk your backside on Heather Heap. In fact, there's barely a square inch on the concrete slabs which surround the plush water features at the top of the manicured slope either.
Subdued atmosphere though - the home fans know that Watson is battling the odds.
"Serena's just so big," exclaims one man. "And Heather is so tiny." The casual fan is putting this contest down to brute force and genetics.
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*Williams 6-2 Watson
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Williams 6-2 Watson
Lindsay Davenport
1999 Wimbledon champion on BBC TV
"That was a statement first set from Serena. She did a masterful job of closing down the crowd and not give them anything to cheer about."
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*Williams 6-2 Watson
Justine Henin
Seven-time Grand Slam champion on BBC Radio 5 live
"Serena has been too good. She did everything perfectly. Can Watson put more pressure on?"
Game and first set
* Williams 6-2 Watson
Serena as focused as we've seen her at Wimbledon in recent years, marching between points, hitting as clean as a jet-wash, chewing up the Watson serve and spitting out the bones. First set gone in 25 minutes, and that mountain just got an awful lot steeper.
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Williams 5-2 Watson*
Lindsay Davenport
1999 Wimbledon champion on BBC TV
"Serena has done such a nice job in this tournament with her footwork. She looks like she has so much time and that's hard to do on grass."
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Williams 5-2 Watson*
119mph on that serve from Serena - you could break concrete with that. Swinging backhand into the Watson forehand corner, and too much on a forehand into the corner. Watson unable to get a finger-hold on the mountain that is the Williams serve.
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* Williams 4-2 Watson
Good pluck from Watson, landing her first serve, hitting the lines with her forehand, forcing Serena into two errors. "Let's go Heather, let's go!" yell the Anglophone Aussies, all chant but no name now Lleyton Hewitt has chased his last Wimbledon lost cause.
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Williams 4-1 Watson*
Watson under assault - my word, that serve was around 120mph, and that forehand almost scorches the Centre Court turf as it sizzles by. 17 minutes gone, Serena with a tight grip.
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* Williams 3-1 Watson
Trouble now for Watto, two break points down as a forehand goes wide after Serena smashes away a volley at the net. Mmm, punchy forehand down the line to save one, but Serena's moving on to to this mid-court forehand with a glimmer in her eye - crashed past Watson's flailing backhand, and that's the first break wrenched away.
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C'mon Heather!
Wayne Ellis: Would like to see Watson win, as I'm not a big fan of Serena. Realistically though, I don't see her winning more than four games.
Natalie Bramall: What a match this is going to be between Heather and Serena!! Come on Heather!!
David: Come on Heather. Do yourself proud!
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Williams 2-1 Watson*
Jonathan Jurejko
BBC Sport at Wimbledon
What's that coming over the hill? It's not a monster. It's not a monster. It's people gathering on Henman Hill/ Murray Mound* of course! Hundreds are primed to focus on the big screen and see if Heather Watson can cause an upset.
Never mind those Henman and Murray characters. I'm renaming this Heather Heap this afternoon. At least until she loses.
If she loses, Jonathan, if.
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Williams 2-1 Watson *
Serena holds to love at a canter, but that's to be expected. Watson goes to her chair at the changeover, white golf visor in place, and seeks solace in a few swigs of sponsor's product.
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It looks like Roger Federer is enjoying his day off. No idea what all those emoticons mean though...
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* Williams 1-1 Watson
"If you love Heather Watson, clap your hands," sing the Aussies, giving Centre Court the air of a cub camp after one too many eggy breads. Yes Heather, an ace down the middle. Williams with a forehand onto the tape, but her backhand return is on Watson before she can adjust her twinkle-toes, and that is frightening power off the Williams backhand - Watson barely twitching as the second serve comes back at her like a cruel boomerang. Better first serve, on the board to raucous applause.
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Serena Williams v Heather Watson
Lindsay Davenport
1999 Wimbledon champion on BBC TV
"Heather has earned her way here and that's what makes it so great. It's not a first-round match . It's a third-round match and she's had some great wins to get here. Hopefully the crowd give her some energy and help her play the match of her life."
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Williams 1-0 Watson *
Oof - punishing start from Serena, crushing a forehand at Watson's feet. Big serve out wide - plus ca change - but that's a punchy riposte from the Briton, snagging her first point with a brisk forehand drive that Williams can only biff long. Hammering serve, game gone.
* denotes next server
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Perfect British summer's day on Centre Court - warm without being blistering, a light breeze to cool a beaded brow, not a sniff of a shower for miles around. Shall we?
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Serena Williams v Heather Watson
Tracy Austin
Two-time US Open champion on BBC TV
"Serena has all the pressure. She's going for all the majors in one year. It's very important for Heather to get a quick start and get some first serves in because sometimes Serena is a slow starter. That way she will also be able to get the crowd even more involved."
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Huge task for Britain's Heather Watson here, coming eyeball to eyeball with a woman who has won 20 Grand Slam singles titles, five of them on this very court. Watson has never before made it past the third round of a Grand Slam tournament, but miracles do happen - there's a load of Aussie fans down there who are trying to start a mass singalong in honour of the British number one. Hands across the ocean.
'The crowd will be behind Watson'
BBC Radio 5 live
Former British tennis player Greg Rusedski - and advisor to Heather Watson - on BBC Radio 5 Live: "Heather Watson has had a great Wimbledon already. All the pressure is on Serena, she is going to have a patriotic crowd behind her. She has to enjoy the experience, keep the contest close early on and she has a chance. The mind plays a key role, have to find a way to get those nerves out because everyone is going to be nervous."
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Sharapova 6-4 6-3 Begu
More from Maria Sharapova, talking on BBC Two: "I got broken in the first game then played good tennis at 4-4 to go up 5-4. The first set gave me confidence, played good in the second. I knew Begu would not go anywhere.
"Obviously you expect to go further in the tournament, expect better things for yourself. You have to raise your level as you progress through the tournament. There is only one champion in the end and the one who raises their game is the champion."
Top videos
Plenty of highlights from Wimbledon already today. Have a look at some of our top videos.
Power time: Nick Kyrgios's stunning forehand.
Pat Cash's granddaughter hits him in the face with fierce backhand.
Play time: Mark Webber takes on BBC Sport's Edge of Glory Challenge at Wimbledon.
Top stories
So that's Djokovic through, but here are some of the other headlines from Wimbledon today.
Go Aussie: Australia's Nick Kyrgios wins the battle of the big servers against Canadian seventh seed Milos Raonic at Wimbledon.
Stan's the man: French Open champion Stan Wawrinka reaches the fourth round of Wimbledon but 2014 semi-finalist Grigor Dimitrov is out.
Teenage kicks: Belinda Bencic beats Bethanie Mattek-Sands
Match summary
Djokovic 6-3 6-3 6-3 Tomic
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Afternoon/early evening, all - Fordyce here. When does the afternoon officially end and the evening begin? Does it alter fractionally each day with the phases of the moon? Hang on, Watto's on court...
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Novak Djokovic on BBC TV: "Great so far. I was hoping I could play better and better as tournament progresses and that is what is happening. As we are moving on, I feel more confident.
"A very good serve today, I won a lot of free points and that takes away a lot of pressure. Maybe it looks like I haven't been tested but I have. I played a couple of good players.
"When you are on the court you have to earn it. It is very close to where I want to be. It will get harder. Kevin Anderson is a very good grass court player, the opponents will get tougher and I have to be on top of my game.
"This gentleman gave me his artificial leg and my signature will make him feel better."
Latest scores
Three matches are set to start, which has caused a Piccadilly Circus-style traffic bedlam on the concourse. Serena Williams and Heather Watson due to arrive on Centre Court, of course, while Marin Cilic and John Isner are warming up on Court One and Aleksandra Krunic and Venus Williams are set to start on court two.
Djokovic into fourth round
Djokovic 6-3 6-3 6-3 Tomic
In fact the only curveball for the Serb is the one female fan who grabs him for a kiss among the usual ball-signing and selfies antics. "It's been great" he tells BBC TV about his first week in SW19.
Quick changeover down on Centre Court ahead of the next match - British number one Heather Watson against world number one Serena Williams.
And that means a change in our commentary box too - here's Tom Fordyce to talk you through the action...
Game, set and match - Djokovic
Djokovic 6-3 6-3 6-3 Tomic
All over! A cheeky grin is plastered all over the face of Novak Djokovic as he stands in the middle of Centre Court, soaking up the acclaim from those fans on their feet. Routine stuff for the defending champion.
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*Djokovic 6-3 6-3 5-3 Tomic
Novak Djokovic is going to have move into the last 16 on his own terms. Bernard Tomic rallies to hold to love. Far too late...
Sharapova 'has belief'
"You have to have belief. You don't work all those hours if you don't have belief in yourself," says Maria Sharapova of her title-winning chances.
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Djokovic 6-3 6-3 5-2 Tomic*
Defending champion Novak Djokovic looks as though as he has hardly broken sweat after unleashing another ace, again down the T, to move within one game of the match. These are ominous signs for Bernard Tomic and, perhaps, the rest of the men's singles draw.
Game, set and match
Sharapova 6-4 6-3 Begu
Irina-Camelia Begu slaps a forehand into the tramlines and that's the cue for Maria Sharapova to raise her arms triumphantly in the air and wave to the Court One crowd.
Djokovic breaks
*Djokovic 6-3 6-3 4-2 Tomic
The Tomic serve has been buckling - and now it gives way. The Australian, receiving vocal support by a throng of green-and-gold-clothed fans at courtside, saves two break points and then any other chance for the Serb in deuce.
But a third great escape ends there. Djokovic has the 22-year-old scampering from side to side across the baseline, with a limp backhand into the tape putting the world number one within touching distance of the last 16.
'Dimitrov will come back. He has a great future'
Dimitrov 3-6 4-6 4-6 Gasquet
Frenchman Richard Gasquet, who defeated 11th seed Grigor Dimitrov 6-3 6-4 6-4 on Centre Court and will play Nick Kyrgios in the last 16, has been talking to BBC Radio 5 live.
"It's important to win a match on the biggest court in the world so I'm really happy with the way I played," says Gasquet.
"He served well but I didn't lose my serve and didn't lose a set. Maybe he is not in the best form but of course he will come back. He has a great future and is still young.
"It will be a tough match against Kyrgios. Last year we played an incredible match where I had nine match points and could not do it. He is one of the best newcomers on the tour but I will try my best."
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Djokovic 6-3 6-3 3-2 Tomic*