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Summary

  1. Novak Djokovic beats Andy Murray 7-6 (7-1) 6-7 (1-7) 6-2 6-4
  2. Djokovic takes first set tie-break 7-1
  3. Murray hits back taking second set tie-break 7-1
  4. Djokovic takes third set 6-2 & fourth 6-4
  5. Click audio speaker or use 'Live Coverage' tab for 5 Live

Live Reporting

By Aimee Lewis

All times stated are UK

Get involved

  1. Post update

    It must surely now be time to fall asleep at the desk? Yes, apparently it is. Hurrah! But there will be more live text commentary later in the day when Day 11 gets under way in New York. It's the men's quarter-finals and there promises to be fireworks between Roger Federer and Gael Monfils as they aim for a place in the last four. Until then.

  2. Post update

    For those of who like stats with their breakfast (or bedtime aperitif), Djokovic becomes the seventh player in the Open era to win 50 matches at Flushing Meadows and he is now level with Roger Federer and Ivan Lendl in having reached eight consecutive US Open semi-finals (Jimmy Connors leads the way with a record 12).

  3. Get involved

    Russell Fuller: Djokovic, the mighty competitor, outlasts Murray in 4 sets: Federer looks like he'll have to clear the ultimate hurdle to win his 18th GS

  4. Post update

    Kei Nishikori, US Open 2014 semi-finalist

    "What a night again! Very happy with my win. Now two days to get ready for semi's. Excited for the next opportunity."

    Nishikori
    Image caption: Nishikori meets the winner of Djokovic v Murray in the semi-final
  5. Post update

    Defeat for Murray, which means he will drop to 10th in the world rankings, but plenty of positives. The Scot's forehand was magnificent, and he would have steamrolled the majority of players on that form. Unfortunately, Novak Djokovic is a man who has the ability to resist and endure like no other. The top seed is into the last four and favourite to secure what would be his second US Open title.

  6. Get involved #bbctennis

    Nick Wall: Fair play Novak, but Murray missed chance at start of 3rd set when Djok seemed on the ropes. Always hanging on when Djok won it.

  7. Post update

    Novak Djokovic

    Djokovic extends his record to 13 victories in 21 matches against Murray. The Scot departs with a wave. Djokovic will prepare to face Kei Nishikori for what will be his eighth consecutive US Open semi-final.

  8. Post update

    "Of course, I'm very glad to get through to another semi-final," says Djokovic. "Andy has changed his game for better in the last couple of years. He's an established top player, someone who has immense quality."

    "My thoughts are just directed to sleeping right now," he adds. "Or party. What do you say? Let's party." Sleep first, Novak, party later.

  9. Post update

    "First of all I want to thank all the fans for staying so late. I hope you guys had fun and I hope you enjoyed watching," says Djokovic to those who remain in Ashe even though it's 1.30am in New York.

    Andy Murray (left) with Novak Djokovic

    "We both gave our best. At times, the tennis was not that nice, we made a lot of unforced errors. We played two sets in two-and-a-half hours and I didn't expect any less."

  10. Game, set and match

    *Djokovic 7-6 (7-1) 6-7 (1-7) 6-2 6-4 Murray

    Murray distracted by the spectators' cheers. "Ladies and gentlemen, please," says the umpire. And Murray launches his first serve into the net. Second serve is good, but the forehand not so great. Opening point Djokovic.

    Both players dipping into their energy reserves, but it is Murray who folds first in a lengthy rally - a clumsy forehand into the tape for 0-30 score.

    Novak Djokovic

    The jaws soundtrack isn't quite playing yet but Murray in dangerous waters. He reduces the deficit, but botches a backhand and now the Scot must dig deep. Two match points. Der-dum... der-dum... An ill-timed yell from a spectator, the other ticket-holders hiss. Murray has nothing left to give. His time on court is over. Into the barrier he goes. Djokovic survives.

  11. Post update

    Djokovic 7-6 (7-1) 6-7 (1-7) 6-2 5-4 Murray*

    Neither player's serve has been truly tested in the last four games or so. A well-timed Murray return the only blot on an otherwise A1 Djokovic service game. The Serb a game away from victory.

  12. Get involved at #bbctennis

    Ruby Prakta: "Just back from a long trip, called into work tomorrow and...turning on the radio. OK Andy & Novak, blaming you if I'm late."

    Barry W: "Murray looking lead-footed and sapped, possibly from slugging all those forehands, but then he's always played a good possum."

    Edward Cassels: "Murray looks dead on his feet. Remains a possibility that this just a ploy to lure Djokovic into a false sense of security."

    Fulford Maths Department: "We're in school already, preparing for our students... Or maybe sat in A14 cheering on @andy_murray reading @BBCSport updates!"

    Gold star for you, sir.

  13. Post update

    *Djokovic 7-6 (7-1) 6-7 (1-7) 6-2 4-4 Murray

    The trainer trots onto the court to give Murray some sort of package, which the British number one places at the back of his chair. The back causing the Scot some concern, apparently. Murray moving rather sluggishly, but manages a hold to love.

  14. Post update

    Djokovic 7-6 (7-1) 6-7 (1-7) 6-2 4-3 Murray*

    Andy Murray

    Murray overcooking his shots and is run ragged on the final point. Djokovic dragging him towards the net, then sending him back to the baseline before forcing the Scot to return to the tape with an irretrievable volley.

  15. Post update

    Pat Cash

    1987 Wimbledon champion

    "Andy Murray v Novak Djokovic has been brutal but Murray's feet are hurting, this issue is catching up to him in the fourth."

  16. Post update

    *Djokovic 7-6 (7-1) 6-7 (1-7) 6-2 3-3 Murray

    Murray takes off his sweat-drenched t-shirt and replaces it with a lavender-smelling, crisp white top. (Disclaimer: I have no idea what sort of fabric conditioner Murray uses so his clothes may, or may not, smell of lavender.)

    Anyway, there's a tennis match going on and it happens to be quite an important one. Murray 40-0 ahead, but there's a sense that Djokovic is the stronger of the two. Nevertheless, it's a hold to 15 for the Scot - Djokovic returning long on the final point.

  17. Post update

    Djokovic 7-6 (7-1) 6-7 (1-7) 6-2 3-2 Murray*

    Cowboy-style yeehaws as Djokovic sends an ace flying by Murray's ears for 30-0, but from 40-0 ahead to deuce. A double fault, a backhand return down the line, a sizzling forehand winner. Talk of Murray's physical demise was very much exaggerated... But a nerve-easing ace followed by a wild return ends the Murray revival.

  18. Post update

    *Djokovic 7-6 (7-1) 6-7 (1-7) 6-2 2-2 Murray

    Murray throws up a double fault and he could be in a spot of bother here at 15-30, but he ups the ante to nudge 40-30 ahead. The Briton resembling a punch-drunk boxer, though, as he watches a Djokovic overhead whizzing by for deuce. I cannae be bothering chasing that, he says. But the Scot is hanging on.

  19. Post update

    Djokovic 7-6 (7-1) 6-7 (1-7) 6-2 2-1 Murray*

    Novak Djokovic

    Murray's resistance is made of rice paper as Djokovic clicks into gear with a hold to love.

  20. Post update

    Djokovic 7-6 (7-1) 6-7 (1-7) 6-2 1-1 Murray*

    Amelie Mauresmo

    Amelie Mauresmo looks on from the the players' box. She's been sitting there for nearly three hours! Three hours! Just sitting there watching tennis for three hours! Yep, delirium has set in, just as a sense of weariness has set in for Murray.

    The Scot lacking zip and he allows Djokovic back at deuce. Djokovic spoons a forehand into the tape. Advantage Murray. The Scot slaps a forehand into the tape. Deuce. But, somehow, he scrambles free to reduce the arrears.

  21. Post update

    Jeff Tarango

    Former professional tennis player on BBC Radio 5 live

    "Andy Murray looks like he's in a lot of pain. He's walking around like I do first thing in the morning when I'm trying to find my toothbrush. It's 80% mental, but he's really exhausted. Those first two sets were gruelling."

  22. Post update

    Djokovic 7-6 (7-1) 6-7 (1-7) 6-2 1-0 Murray*

    What have these two got left? Can they continue to hit the glorious peaks of the previous three sets. Yes, yes they can. Probably. A lengthy rally ends with a Djokovic backhand going long. Ben Stiller, he of Hollywood films, applauds their efforts. The Serb digs deep, saves a break point and skips ahead after a hoicked Murray forehand and an ace.

  23. Post update

    Murray can still win

    Russell Fuller

    BBC tennis correspondent at Flushing Meadows

    Andy Murray

    "Amelie Mauresmo said she sees no reason why Murray can't win - even if he may not be at his best until 'towards the beginning of next year' when he's 'completely fresh and ready'.

    "Murray was very fired up during his win over Jo-Wilfried Tsonga, often pleading very emotionally with himself to raise his game. 'I haven't really made up my mind on this yet,' said Mauresmo. 'He's old enough now to know what's good for him, how he should behave on the court, what brings him energy and what maybe is taking him down a little bit sometimes. It's not going to be either saying nothing or completely going crazy on the court - he has to be in the middle somewhere'."

  24. Game and third set

    *Djokovic 7-6 (7-1) 6-7 (1-7) 6-2 Murray

    Murray was in control at 30-0, but he puts too much power on a forehand, follows up with a netted forehand and then a net chord goes Djokovic's way. Set point. Danger averted thanks to a punchy shoulder-high volley. Backhand into the tape, though, and Djokovic has a second set point. And Murray must take this match to a fifth set if he is to progress to the semi-finals. Another mistimed backhand and Djokovic is ahead.

  25. Post update

    Djokovic 7-6 (7-1) 6-7 (1-7) 5-2 Murray*

    Murray giving his best impression of a character from One Flew Over the Cuckoos Nest, muttering to himself after netting a return. A tango at the net, replays show Djokovic's volley was a fraction wide. But from 15-30 to 40-30 we go. Murray's return bounces beyond the baseline. Djokovic a game away from winning the set.

  26. Post update

    *Djokovic 7-6 (7-1) 6-7 (1-7) 4-2 Murray

    Djokovic gobbles up a 73mph second serve, but Murray responds positively. Big serves. Big points. A hold to 15.

  27. Post update

    Djokovic 7-6 (7-1) 6-7 (1-7) 4-1 Murray*

    Murray steps in to crunch a backhand return onto the line for 40-30. What a returner Murray is, sending up a moonball and Djokovic miscues the overhead. Deuce! Another Djokovic error presents Murray with a break point. The pair start of with a series of fierce exchanges and then they slice and dice it, with Murray going long on the 27th shot.

    A second break point comes and goes. Brilliant from Djokovic as he wriggles free. Has the landscape changed?

  28. Get involved at #bbctennis

    Kate MacKenzie: "Have to be up in an hour or so... finish it off Andy and get my day off to a great start!"

    Richard Lismore-John: "Murray's forehand, his weaker side, is starting to dominate from the baseline - encouraging signs!"

    Christopher Halsall: "It's hard to keep track of the constant changes in momentum in this game. It's with Murray now and he's got to make it count."

  29. Djokovic breaks

    *Djokovic 7-6 (7-1) 6-7 (1-7) 3-1 Murray

    It's midnight in the Big Apple, but if you're in Britain there will soon be breakfast TV to watch. Djokovic nicks the opening two points - a Murray backhand drifting long to get the doubters talking. But dealing with the Murray forehand is like trying to contain lightening in a bottle and he saves one point. Ah. But, having typed that, the forehand falters - two break points Djokovic. Murray backhand long. Djokovic, somehow, runs free.

  30. Post update

    Djokovic 7-6 (7-1) 6-7 (1-7) 2-1 Murray*

    Novak Djokovic

    Djokovic proceeds to 40-15 and an unhappy repeatedly says "furious" while glancing towards his team. The Serb ahead once again.

  31. Post update

    *Djokovic 7-6 (7-1) 6-7 (1-7) 1-1 Murray

    An inch-perfect crosscourt forehand from Murray forces Djokovic to nearly do the splits. The Serb rattled and understandably so because there are exquisite shots coming from the Murray racquet. A scintillating forehand winner follows for a hold to love.

  32. Post update

    Djokovic 7-6 (7-1) 6-7 (1-7) 1-0 Murray*

    Floodlights at full beam, lighting up Ashe, but the players generating enough wattage to illuminate if there should be a power cut during this high-voltage. A number of empty seats to be seen as spectators take this opportunity to stretch their legs. Oh, and it's a comfortable hold for Djokovic.

  33. Game and second set

    Djokovic 7-6 (7-1) 6-7 (1-7) Murray*

    A fine first serve from Murray down the middle and Djokovic's return dribbles into the net. Second set to Murray. I wasn't planning on sleeping tonight anyway...

    Novak Djokovic in the second set
  34. Post update

    Djokovic 7-6 (7-1) 6-6 Murray*

    Murray senses Djokovic's fuel gauge is running low so he ups the intensity, pulls the Serb around the court like a fine puppeteer until the top seed nets. 5-1 Murray at the changeover.

  35. Tie-break

    Djokovic 7-6 (7-1) 6-6 Murray*

    Ear-splitting cheers on Ashe as Murray secures the first point. The Scot collects another and Djokovic looks like he could do with spending some time in a countryside retreat to recuperate as a tired forehand into the tramlines gives Murray a 3-0 lead.

    Murray the marathon man, coming out on top of a 23-shot rally. Djokovic in trouble, he's 4-0 down. Time to send up the flares?

  36. Get involved #bbctennis

    Scott: "This is an unreal match. Supporting Murray from back in his home country of Scotland. Do us proud, lad!"

    Alex Antiff: "Work in 3 hours... sleep is overrated anyway."

    Anon: "Each set is like a match between these two. Djokovic may have won the battle but Rome wasn't built in a set."

  37. Post update

    Djokovic 7-6 (7-1) 6-6 Murray*

    Murray has spent three and a half hours longer on court than Djokovic in this tournament, but the Scot showing no signs of fatigue. Immense power and accuracy from Murray as his forehand forces Djokovic wide. From 15-15 to 30-30 and Murray senses his opportunity is now.

    Relentless stuff from Murray and Djokovic crumbles like a chocolate flake, backhand long for a break point. But if Murray is to stop this set from going into a tie-break he must do that all over again because Djokovic drags the game to deuce.

    Has Murray blown it? An attempted lob goes long, Advantage Djokovic. Another lengthy rally ensues. Djokovic into the tape. Deuce. Advantage. Deuce. Advantage. Murray nets a forehand. Into a tie-break we go.

  38. Post update

    Piers Newbery

    BBC Sport at Flushing Meadows

    "The Murray backhand has always been his favoured side but 'the Lendl years' saw his forehand become a real weapon, and for the last few games it has been dominating. Some thunderous flat strikes into the corner have had Djokovic scrambling beneath us in frustration, and looking to his team for answers.

    "The question is, can Murray keep belting those forehands for another two hours or more?"

    Andy Murray
  39. Post update

    *Djokovic 7-6 (7-1) 5-6 Murray

    Murray rattles off three points in quick succession and nudges ahead with a crisp one-two - a forehand out wide followed up with a clubbed forehand winner.

  40. Post update

    Djokovic 7-6 (7-1) 5-5 Murray*

    This set has not been as mesmeric as the first, but it is intriguing nevertheless. Not even a peek for Murray on the Djokovic serve as the top seed holds to 15.

    Andy Murray in the second set
  41. Post update

    *Djokovic 7-6 (7-1) 4-5 Murray

    Murray needs to address the second serve if he has any thoughts of wrapping Djokovic up in a permanent straight jacket. But in this game it ultimately matters little. Will the Scot wobble at 30-30? Nah. A 21-shot rally ends with a monstrous Murray forehand for 40-30 and the Briton is equally as emphatic in the next point, that brutal forehand making Djokovic look as if he has cement in his trainers.

  42. Murray breaks back

    Djokovic 7-6 (7-1) 4-4 Murray*

    A tired backhand into the tape from Djokovic followed by a tame netted forehand gives Murray hope at 15-30. And the Scot has two break points thanks to a Djokovic double fault - his first of the match. "Come on, Andy," says a gentleman in the crowd. A feather-light touch at the net from Djokovic saves one and on the next point Murray smacks an adrenalized forehand wide. Deuce.

    But A third break point comes Murray's way and this time the forehand is on song. He swings loose and free until he lasers a winner into the corner.

    Andy Murray in the second set
  43. Post update

    Jeff Tarango

    Former professional tennis player on BBC Radio 5 live

    On Murray berating himself: "Look at the statistics when John McEnroe used to blow off steam. In the next six or seven shots he'd win about 85% of points.

    "Andy's letting is emotions get to him - in that he's forgetting how he won the US Open here in 2012. He's being supplying all the power to Novak so, on the run, Novak's been able to use that power to put Andy out of position. He needs to learn that balance between too upset and being fired up.

    He's hitting great shots, but it's the wrong shot."

  44. Murray breaks

    *Djokovic 7-6 (7-1) 4-3 Murray

    Djokovic the master craftsman. A beautifully crafted point as a delicious forehand tickles the line and forces Murray on the defensive...the Serb approaches the net and sees off the Scot for 15-15. A rattled Murray shouts something about his movement. "Collapsing" he screams towards his camp. He has two break points to save but is unable to stop Djokovic romping ahead. The Serb again works his way into a position to whack a fabulous forehand winner.

  45. Murray breaks back

    Djokovic 7-6 (7-1) 3-3 Murray*

    Djokovic plonks a backhand into the tape. A sniff for Murray at 0-30. Yelps of encouragement for both players from the New Yorkers. Is it a blip from Djokovic or cause for serious concern? The Serb screws a forehand into the tramlines. Three break points Murray. A meaty forehand earns Djokovic his first point of the game, but he's soon on the ropes - that trusty double-handed backhand doing the job for the Scot.

  46. Post update

    *Djokovic 7-6 (7-1) 3-2 Murray

    Murray's engine alternatively roaring and spluttering. For this game he's firing on all cylinders, holding to love. Djokovic content to maintain the advantage he has already got.

  47. Post update

    Djokovic 7-6 (7-1) 3-1 Murray*

    The points have shortened and Murray is going through one of his dips, spraying forehands to not only gift Djokovic a hold to 15 but present it with hundreds of thousands and a chocolate flake on top.

  48. Djokovic breaks

    *Djokovic 7-6 (7-1) 2-1 Murray

    Andy Murray

    Murray in trouble. He fails to negotiate the barrier, presenting Djokovic with two break points. The Scot embarks on one of his familiar monologues. "Idiot," he says, while shaking his head. His concentration floats away into the night sky and Djokovic clenches his first as he watches a Murray forehand slap into the tape.

  49. Post update

    Djokovic 7-6 (7-1) 1-1 Murray*

    Both players opening with comfortable service games. A hold to 40 for Djokovic.

  50. Post update

    Jeff Tarango

    Former professional tennis player on BBC Radio 5 live

    "That was a tough first set. I don't think Novak thought he was going to get the tie-breaker that easy."

  51. Get involved

    Simon Laird: "It's a shame when you get a great game that's not the final...... It's only downhill after this thriller!"

    Jamie Braithwaite: "Good sign that Murray isn't afraid to come out attacking against Djokovic, their friendship isn't getting in the way of an epic battle."

  52. Post update

    * Djokovic 7-6 (7-1) 0-1 Murray

    Murray left the court after the tie-break, perhaps for a comfort break or perhaps to look in the mirror and give himself an inspirational talking to a la 2012. Murray rattles off another game, holding with a thunderous ace down the middle.

  53. Post update

    Piers Newbery

    BBC Sport at Flushing Meadows

    "After Murray has a shocker in the tie-break, the crowd get to let off steam after 73 minutes of relative calm. 'Crazy dancing man', as he seems to be known, does his stuff in the stands to the sounds of Billy ldol. He's quite the character. They love him."

  54. Game and first set

    Djokovic 7-6 (7-1) Murray

    Novak Djokovic

    Neither player deserves to lose the first set, but someone has to and it is Murray who falls behind. Five set points to Djokovic and the world number one is ruthless, his serve too hot for Murray to handle.

  55. Tie-break

    Djokovic 6-6 Murray

    At 4-0 Djokovic is in control, but on the next point Murray ups the ante from the baseline and the Serb goes long. The Scot forcing the play, rashly stepping in from the baseline and goes wide. 5-1 to Djokovic at the changeover.

  56. Tie-break

    Djokovic 6-6 Murray

    First point to Djokovic - 1-0. Double fault Murray - 2-0. A scooped backhand into the tape from Murray - 3-0.

  57. Post update

    *Djokovic 6-6 Murray

    Brutal and balletic. Hard-hitting from the middle of the court by Murray before he deftly volleys out of Djokovic's path for 15-15. But careless from the Scot as he allows Djokovic to pounce on a tame volley for 30-30. But he comfortably sees off the Serb, who nets a forehand and is then forced to watch an ace fly whistle by. I suppose we might as well go to a tie-break...

  58. Post update

    Djokovic 6-5 Murray*

    Breathless stuff. Djokovic drags Murray towards the net with a cushion-soft drop shot, but the Scot is alert and his reply forces Djokovic to volley wide. Murray again at the net, putting Djokovic under pressure, but such is the venom of the top seed's strike, Murray can do little but launch the ball of yellow felt into orbit. What have you got, Andy?

  59. Post update

    *Djokovic 5-5 Murray

    A shrug of the shoulders from Djokovic as he goes long for 40-15, as if to tell his camp "there's nothing I do". A dreamy forehand from Murray to conclude a convincing hold.

  60. Post update

    Noisy Novak

    Novak Djokovic
    Image caption: Novak Djokovic urges the New York crowd to get behind him after winning 29-shot rally
  61. Get involved at #bbctennis

    Ahmed: "Andy has been surprisingly more than normal aggressive. Is it maybe he isn't fit enough to take the rallies with Novak?"

    Josh Jackman: "That deuce point at 4-4 was absolutely incredible - shame it ended with an unforced error."

    Amanda Oliver: "Randomly awake in the middle of the night to listen to the tennis #makeitagoodonemurrary"

  62. Post update

    Djokovic 5-4 Murray*

    At 30-15, Murray puffs out his cheeks and flares the nostrils as if he's preparing for a bullfight. Brilliant returning for 30-30. The pair fetch and retrieve, fetch and retrieve... Djokovic attempts a momentum-changing forehand, but Murray responds like a brick wall and Djokovic loses patience - overclubbing a forehand for break point.

    The Serb's serve comes to his rescue for deuce. What follows is a mesmeric 29-shot rally. Neither prepared to crumble, both holding strong. One flamethrower after another, the crowd screams, then they groan, Murray into the tramlines... Djokovic roars... he wildly gesticulates... the crowd erupts. Oh, my giddy aunt. From advantage back to deuce to advantage again. Murray fails to negotiate the barrier and Djokovic scrapes through.

  63. Post update

    Piers Newbery

    BBC Sport at Flushing Meadows

    "Just as the sense is taking hold among the local patrons that this is not going to be the epic struggle they had been promised, Murray hauls himself level. His team applaud loudly, with Djokovic prowling a few feet below them. Becker remains unmoved down the other end."

  64. Post update

    *Djokovic 4-4 Murray

    Every point a monumental struggle, a battle of strength and a test of nerve. A flick of the wrist from Djokovic sets him up for a driving backhand volley for 15-30. The pair seem to think they're in the circus and have the crowd in the palms of their, erm, racquets... Djokovic sliding towards the tape for a volley... Murray responding with a volley which kisses the tramline. 30-30. Solid serving from the Scot for one of his more comfortable service games.

  65. Murray breaks

    Djokovic 4-3 Murray*

    Djokovic targeting the Murray backhand with a series of crunching blows and the scampering Murray can take no more, launching a backhand towards the umpire's direction. Applause from Boris Becker. At 30-30, Murray is off target with a return but drags the game to deuce.

    Andy Murray

    Djokovic pulling Murray this way and that from the baseline, but screws a forehand wide to gift the Scot a break point and it's the Serb's concentration which dips, netting, and we're back on serve. Ladies and gentlemen, we're set for an all-nighter.

  66. Post update

    *Djokovic 4-2 Murray

    Four games on the trot for Djokovic and Murray must stop the rot. Oohs from the crowd as Djokovic conjures a brilliant lob from his shoelaces for the opening point. The Scot concedes the first two points, but battles back to 30-30 and a big serve out to the wings eases him to within a point of holding. Murray comes through, and he needed to.

  67. Post update

    Djokovic 4-1 Murray*

    Novak Djokovic

    At 30-30, Murray returns with such venom that a stooping Djokovic dribbles a backhand towards the tape. Break point Murray. But an 86mph serve fools Murray, and the Serb volleys his way to deuce. Canny serving from the world number one and he holds firm in a crisis.

  68. Djokovic breaks

    *Djokovic 3-1 Murray

    The standard is already eye-wateringly high. Fans are already on the edge of their seats. Trainers screeching. Crowd roaring... 18 shots... 19 shots.. 20 shots... Djokovic comes out on top but it's only for 15-15. A second double fault from Murray opens the door for Djokovic and a foolish backhand into the tape presents the Serb with two break points. Murray sprints to the net, the pair fire forehands and volleys back and forth but Djokovic is at his rubber-legged best and gets the better of his friend and rival.

  69. Post update

    Djokovic 2-1 Murray*

    Supernaturally good tennis from both players. Murray continuing to fight fire with fire, sweetly hitting a forehand to haul himself to 30-30. The Briton playing tennis of an incredibly high standard, hitting a jaw-droppingly good forehand down the line for break point.

    But he lets Djokovic off the hook with what the Scot himself describes as a "stupid mistake" and then he is wild and wide with a forehand. "WHAT WERE YOU THINKING?" Murray roars. Advantage Djokovic. A screwed backhand from Murray and the Serb holds.

  70. Djokovic breaks back

    *Djokovic 1-1 Murray

    From 30-0 to 30-30 and the New York crowd give out a collective groan as Murray nets when the court was all his. Fierce hitting from the Scot, Murray trading missiles while Djokovic has yet to enter the arms race.

    Oh. Should Murray fans begin to worry? He double faults and rubs his shoulder. Momentum swings towards Djokovic as the Briton slaps a backhand into the tape. Break point, but Murray responds with a cool ace down the middle.

    Another break point saved, Murray stepping in from the baseline to produce an irretrievable forehand. "Come on," he says. But Djokovic collects his third break point. Brutal hitting from both players during an epic rally, and it's Murray who falters, netting a forehand.

  71. Murray breaks

    Djokovic 0-1 Murray*

    "Please take your seats," says the umpire. "Any seat for now," he adds impatiently, while Djokovic patiently waits to get this match under way.

    Oof! First blow to Murray. A thumping return down the line. Murray on his toes, aggressive and intense, Djokovic with an overcooked backhand and the Scot leads 15-30. Djokovic with a wild forehand into the tramlines. Two break points Murray. What a start.

    Big first serve from Djokovic chalks off one break point and all traces of an early upset are erased as Murray clumsily nets. To deuce we go. Djokovic yet to reach full boil - netting for a third break point - and the Serb goes long once again. He's broken! Broken, I tell you!

  72. Post update

    There are more celebrities in Ashe than a Saturday night in Faces nightclub. There's Leonardo DiCaprio, Ryder Cup captain Tom Watson, actor Patrick Stewart. The newly married Brad Pitt, too, apparently. LA must have turned into a ghost town.

  73. Men's singles quarter-finals

    Djokovic v Murray (02:00 BST approx)

    Andy Murray

    After beating Jo-Wilfried Tsonga in straight sets in the fourth round, Murray said he was nearly back to his best. Djokovic is a significant step up from the winsome Frenchman, however. The Serb has yet to drop a set in this tournament.

  74. Post update

    The players have emerged and the soup bowl of a stadium has filled up for this gladiatorial clash. It's the 21st edition of Murray versus Djokovic. Who will receive the key to the semi-final door?

  75. Post update

    Piers Newbery

    BBC Sport at Flushing Meadows

    It's pretty lively on Ashe for the most anticipated match of the tournament so far. To the thumping sound of 1970s Canadian rockers Rush, for some reason, seats are scrambled for, arms laden with drinks and snacks, and quizzical looks follow the appearance of possibly famous people of the big screen. It's a New York night session! And it's a gentle 26C with a light breeze. Perfect.

  76. Post update

    Novak Djokovic and Andy Murray
  77. Post update

    That's the first course gobbled up. Top marks to the chef so far. Any room for a main course, or is it too difficult to digest such a feast during such unwelcoming hours?

  78. Post update

    Serena Williams will play Russia's Ekaterina Makarova in the semi-finals. "Honestly, I've had a tough year in the majors so you can never underestimate anyone," says the world number one of her three other fellow semi-finalists. "We're all fighting very hard and we all deserve to be here."

  79. Post update

    Serena Williams: "I felt she was playing really well (at the start of the first set). I didn't think I was doing too much wrong. I thought 'if she keeps this up then she deserves to win'. I really rely on my serve a lot but if my serve is off I'm able to rely on my groundstrokes. I had a lot of fun today and I'm really happy to have won."

  80. Game, set and match

    Williams 6-3 6-2 Pennetta*

    Sharp-shooting from Williams - a crisp forehand onto the line, an unreturnable serve - for a 30-0 lead, but Pennetta reins her in to 30-30. Brutal hitting from the baseline, though, earns Williams a match point and the crowd roar in anticipation. First serve down the 'T', Pennetta nets and Williams does a celebratory twirl at the net.

    Serena Williams

    She was two breaks down in the first set but now Williams is through to the semi-finals and ever closer to an 18th Grand Slam.

  81. Williams breaks

    *Williams 6-3 5-2 Pennetta

    A double fault from Pennetta - her first of the match - gifts Williams a 0-30 advantage. Tired-looking shots from Pennetta as Williams collects two break points. The Italian waving the white flag and who can blame her as a fierce Williams backhand flies by to seal another break. Williams roars. She knows she is nearly home.

  82. Post update

    Williams 6-3 4-2 Pennetta*

    Serena Williams

    Williams dominant and the scriptwriters can start writing the final chapter. A hold to 15 - Pennetta wide on the final return.

  83. Williams breaks

    *Williams 6-3 3-2 Pennetta

    Williams goes 0-30 up by punishing a timid second serve and is this where the top seed turns the screw? Oh la la! Williams with one of the shots of the tournament - running backwards, she retrieves and responds with a hooked a forehand-down-the-line winner. The top seed raises her arm to acknowledge the brilliance. Williams breaks to love. Pennetta in quicksand.

  84. Post update

    Williams 6-3 2-2 Pennetta*

    Two easy points for Williams for a 30-0 lead and the world number one fires down a 117mph ace to ease within a point of levelling the set. We have a rally! Pennetta on the back foot, moving hither and tither until she slaps a tired-looking backhand into the tape.

  85. Post update

    *Williams 6-3 1-2 Pennetta

    Flavia Pennetta

    Pennetta knocks herself out as she attempts a backhand from the baseline. Williams asks the Italian if she is ok, the 12th seed nods and gets back on her feet. Off we go again. Pennetta, slightly rattled, concedes a break point but is soon firing on all cylinders and wraps up the game with her sixth ace of the match.

  86. Post update

    Williams 6-3 1-1 Pennetta*

    Magical from Pennetta, who slides along the baseline to conjures up a jaw-droppingly good backhand winner down the line. The Italian rejuvenated while Williams is going through one of her dips.

    Pennetta gathers two break points but, ultimately, they count for nothing as Williams rattles off a thunderous forehand and a booming ace to force the game to deuce. It was nervy at times (a double fault at advantage suggests this isn't vintage Williams) but a fourth and fifth ace of the match pulls the top seed through.

  87. Post update

    *Williams 6-3 0-1 Pennetta

    Pennetta screws a backhand wide and gives out a frustrated groan. Williams in contention at 30-30 and the world number one controlling her opponent, forcing her from tramline to tramline until break point is hers. Oh. Nice. A first ace of the match from Pennetta drags the game to deuce - but the 12th seed slips up once again. Although Williams fails to make the most of the opportunity and Pennetta stops the rot, another ace a first hold in what feels like an age.

  88. Game and first set

    Williams 6-3 Pennetta*

    Serena Williams

    Williams coughs up two double faults to present Pennetta with two break points. The top seed responds with a brilliant one-two - a serve out wide followed by a crackerjack of a forehand winner. The Williams serve on song and danger is averted. Pennetta's return bounces beyond the baseline and it's game and first set Williams. Just the six consecutive games for the American.

  89. Williams breaks

    *Williams 5-3 Pennetta

    At the start of this match there were indications that it might be the day of the underdog but Pennetta, who was loose-limbed and playing with freedom when the match began, is now griped by anxiety. Two break points Williams. One is saved but the Italian's backhand drifts over the baseline and Williams marches on.

  90. Post update

    Williams 4-3 Pennetta*

    A first ace of the match from Williams sees her skip merrily to a 40-0 lead. Pennetta not being given a whiff of a sniff on the top seed's serve. Another unreturnable howitzer. Boom! A stern-looking Williams in front for the first time.

  91. Williams breaks

    *Williams 3-3 Pennetta

    Serena Williams

    Earlier in this set Pennetta's groundstrokes were kissing the lines, but the Italian's radar seems to have been switched off. She saves two break points, but a fired-up Williams approaches the net and wrong-foots Pennetta with a thunderclap of a volley for a third break point. Pennetta stutters at the net and shakes her head as she makes her way back to the baseline. Advantage gone. Serena on the rampage.

  92. Post update

    Williams 2-3 Pennetta*

    At 40-15 Williams is in control, but she messes up a simple volley - netting when the court was at her mercy - and Pennetta now has hope. The duo battle it out from the baseline and it's the Italian who surrenders, netting a forehand. A stentorian "come on" from Williams greets Pennetta's error. The top seed is ready to rock.

  93. Williams breaks

    *Williams 1-3 Pennetta

    Williams's feet now beginning to move in unison. The American not exactly dancing the cha-cha-cha, but she has upped her intensity and is hitting hard from the back of the court, which earns her three break points. Pennetta saves two but nets on the third and Williams nicks the game.

  94. Pennetta breaks

    Williams 0-3 Pennetta*

    Interesting. Very interesting. Pennetta swinging loose and finding the lines - a fabulous forehand for 15-30 and it's a clench of the fist from the Italian has she goes a double break point up. Williams, out of sorts and moving at mobility-scooter pace, goes long on the next point. There's a hush on Arthur Ashe. The silence of a shocked crowd.

  95. Post update

    *Williams 0-2 Pennetta

    Williams strikes early, collecting a break point on her way to a 40-30 lead,but Pennetta holds firm, forcing Williams this way and that until the American balloons a forehand into the tramlines. The Williams forehand faltering and Pennetta comes through the test to consolidate her lead.

  96. Pennetta breaks

    Williams 0-1 Pennetta*

    The defending champion is wearing an eye-catching black and white leopard print outfit. The American has come dressed like a snow leopard, but there's no cat-like reflexes from the world number one on the court. Pennetta moving beautifully, a delightful backhand the pick of the bunch as she secures an early break.

  97. Post update

    The warm-up is over. Pennetta is on the baseline, waiting for Serena to emerge from her chair. We've waited long enough Serena...

  98. Post update

    A Flavia Pennetta victory over two-time defending champion Serena Williams would cause jaws to drop into laps, but the top seed hasn't been her usual dominant self this year. Indeed, this is her first Grand Slam quarter-final of 2014 so she has been beatable on the grand stage.

  99. Post update

    Serena Williams warming up like a windmill at the net during the coin toss. The umpire in danger of decapitation. Both players getting into the groove after a later than expected start to this quarter-final thanks to the mammoth match between Stan Wawrinka and Kei Nishikori.

  100. Post update

    Thank you Michael. Aimee here to take you through to twilight. The theatre of a floodlit evening in New York, eh, where the lights shine at full wattage and those taking centre stage revel in the limelight. Some would say it is the perfect setting for those who usually sparkle under the Big Apple's darkened skies. First is top seed and five-time champion Serena Williams against Flavia Pennetta. Stand by.

    Flushing Meadows
  101. Women's singles

    So we already know that Denmark's Caroline Wozniacki will meet unseeded Shuai Peng of China in one semi-final and that Russia's Ekaterina Makarova will be one of the players in the other semi-final.

    Flavia Pennetta

    Who will she meet? Five-time US Open winner Serena Williams will start as the favourite, as she does in most of her matches, and she faces Italy's Flavia Pennetta (pictured).

    That match is coming up shortly, and after that it will be the Andy Murray v Novak Djokovic tie in the last of the men's singles quarter-finals.

  102. Post update

    Wawrinka 6-3 5-7 6-7 (7-9) 7-6 (7-5) 4-6 Nishikori

    BBC tennis correspondent Russell Fuller: Welcome to the Grand Slam semi-final club Kei Nishikori: fantastic fight to see off Stan Wawrinka in five sets. Rarely took a step backwards. It took Nishikori four hours, 15 minutes - four minutes fewer than he needed to beat Milos Raonic at 2.26am yesterday morning.

  103. Post update

    Wawrinka 6-3 5-7 6-7 (7-9) 7-6 (7-5) 4-6 Nishikori

    Nishikori v Wawrinka

    BBC Radio 5 live sports extra commentator David Law: Nishikori was as uplifting as Wawrinka at the Australian Open. Fearless, fantastic tennis.

  104. Eight different champions?

    American journalist Ben Rothenberg and BBC Radio 5 live sports extra analyst: Unless Novak Djokovic wins the #USOpen, the four Grand Slam titles in 2014 will have been won by four different men + four different women.

  105. Get involved

    #bbctennis

    Angel Di Maria: Well played Nishikori. Incredible stamina and courage. Brilliant.

    Obviously, that is not the REAL Angel Di Maria, although if the real one wants to contact us then he is more than welcome.

    The real one has been busy himself tonight by setting up three goals and scoring once in Argentina's 4-2 win against Germany. In other football news, England beat Norway 1-0 thanks to Wayne Rooney's penalty.

  106. Post update

    Piers Newbery

    BBC Sport at Flushing Meadows

    "It was not to be, Ross Hutchins misses out on a first Grand Slam final after he and Taiwan's Yung-Jan Chan lose 7-5 4-6 10-7 to Sania Mirza and Bruno Soares, as the cheers from Nishikori's win on Ashe drift across the grounds."

  107. Post update

    Wawrinka 6-3 5-7 6-7 (7-9) 7-6 (7-5) 4-6 Nishikori

    Kei Nishikori

    Kei Nishikori after becoming the first Japanese player to reach a Grand Slam semi-final in the Open era: "I started a little bit tight but my body was OK. As the game was going on, I got more confidence. I don't know how I finished the game but I'm very happy."

  108. Post update

    Wawrinka 6-3 5-7 6-7 (7-9) 7-6 (7-5) 4-6 Nishikori

    BBC Radio 5 live sports extra

    John Morris, who represents Nick Kyrigos: "Unbelievable effort from start to finish. He came out very tired looking and for him to outlast Wawrinka in over four hours after what he went through the other night is monumental.

  109. Game, set and match - Kei Nishikori

    Wawrinka 6-3 5-7 6-7 (7-9) 7-6 (7-5) 4-6 Nishikori

    Wawrinka saved the first match point, but Nishikori wins it at the second attempt. What an effort from Nishikori, who becomes the first player from Japan to reach a Grand Slam semi-final in the Open era.

    He beat fifth seed Milos Raonic in the last round, and has now knocked out the third seed as well.

  110. Post update

    *Wawrinka 6-3 5-7 6-7 (7-9) 7-6 (7-5) 4-5 Nishikori

    Match point for Nishikori.

  111. Post update

    *Wawrinka 6-3 5-7 6-7 (7-9) 7-6 (7-5) 4-5 Nishikori

    Nishikori

    A lovely drop shot from Nishikori helps him hold his serve to love. He has battled a toe injury, and was involved in a five-set thriller in the last round. He needs one more game to move into the semi-final.

  112. Mixed doubles semi-final

    Piers Newbery

    BBC Sport at Flushing Meadows

    "Things are looking up on Armstrong from a Brit/Taiwanese perspective, with Hutchins and Chan taking the second set despite letting another lead slip. With the sun dipping behind the stands, the floodlights are required as we head into a Champions' Tie-Break - first to 10."

  113. Post update

    Wawrinka 6-3 5-7 6-7 (7-9) 7-6 (7-5) 4-4 Nishikori*

    It is now 4-4. Who is going to blink first?

  114. Get involved

    #bbctennis

    Levi Crisp: Can't even nap when Nishikori v Wawrinka is this good. Hope I don't wake up any other students living all round me during Murray #bbctennis

  115. Post update

    *Wawrinka 6-3 5-7 6-7 (7-9) 7-6 (7-5) 3-4 Nishikori

    Michael Chang is a bit happier now as his man holds his serve, although Wawrinka had won two points to make it a nervy occasion.

    Whatever the result, this has been a fantastic attempt from Kei Nishikori, coming less than two days after he was involved in a five-set thriller against Milos Raonic.

  116. Post update

    Wawrinka 6-3 5-7 6-7 (7-9) 7-6 (7-5) 3-3 Nishikori*

    We have now been playing for four hours. Who will be the last man standing? Nishikori's coach, Michael Chang, a US Open finalist back in 1996, looks a worried man.

  117. Post update

    Wawrinka 6-3 5-7 6-7 (7-9) 7-6 (7-5) 3-3 Nishikori*

    Jeff Tarango

    Former professional tennis player on BBC Radio 5 live sports extra

    "To have two five-set matches in a row really takes its toll and Nishikori's face is red and he looks like he has been in a boxing match."

  118. Post update

    Wawrinka 6-3 5-7 6-7 (7-9) 7-6 (7-5) 3-3 Nishikori*

    Wawrinka wins the sixth game to love after Nishikora powers the last shot into the net. 3-3 in the fifth set. Fine serving from the Swiss. Can Nishikori claim a surprise victory here?

  119. Coming up later

    Serena Williams v Flavia Pennetta

    Serena Williams

    Just a reminder that our next match will feature Serena Williams as the American takes on Italy's Flavia Pennetta later on in their women's singles quarter-final tie.

  120. Post update

    *Wawrinka 6-3 5-7 6-7 (7-9) 7-6 (7-5) 2-3 Nishikori

    If Wawrinka were walking along your high street talking to himself as he is on Ashe, you'd calmly, but quickly, move in the opposite direction. The Swiss pumped up and oblivious to those around him. But he wastes a break point - his backhand return floating into the tramlines.

    Wawrinka perhaps needs to be more aggressive from the baseline. Nishikori comes out on top of a tussle from the back of the court, and seals the deal as Wawrinka's backhand bounces long.

  121. Post update

    Wawrinka 6-3 5-7 6-7 (7-9) 7-6 (7-5) 2-2 Nishikori*

    Nishikori

    The clock ticks beyond midnight in Blighty. This match is approaching its fourth hour. The Nishikori forehand on song, helping him level the score at 30-30, but big serving from Wawrinka takes him over the line. The Swiss muttering to himself in between points, trying to ease the nerves.

  122. Post update

    Junior girls' doubles round two

    Update from the juniors - and it is good news for British duo Freya Christie and Katie Swan who have knocked out second seeds Anhelina Kalinina (Ukr) and Iryna Shymanovich (Blr) 7-6 (10-8) 6-4 to make it into the third round.

  123. Post update

    *Wawrinka 6-3 5-7 6-7 (7-9) 7-6 (7-5) 1-2 Nishikori

    Nishikori's radar faltering slightly, screwing a forehand wide to give Wawrinka a sniff at 15-30. An attempted backhand crosscourt into the tape and Wawrinka has two break points.

    Will the third seed turn the screw? Brilliant from Nishikori as he holds firm and turns defence into attack with two thunderous forehands. One saved. It's that forehand to the rescue again. Boom. Two break points saved. Deuce.

    A little drama as the next point is replayed, a late call from Nishikori much to Wawrinka's annoyance. The wild-eyed Swiss rubbing his jaw, muttering. His chance has gone. A cute volley from Nishikori and the 10th seed lives on.

  124. Post update

    Wawrinka 6-3 5-7 6-7 (7-9) 7-6 (7-5) 1-1 Nishikori*

    Crisp serving from the Swiss - an ace down the 'T' eases him to 40-0. The Australian Open champion gives his opponent little chance, working him to his forehand side and Nishikori nets.

  125. Post update

    *Wawrinka 6-3 5-7 6-7 (7-9) 7-6 (7-5) 0-1 Nishikori

    A wild forehand from Nishikori allows Wawrinka to level at 15-15, but the 10th seed reverts to serve and volley and the ploy works. He wraps up the game with a forehand winner and there's no sign of the man from Japan wilting just yet.

  126. Post update

    Wawrinka 6-3 5-7 6-7 (7-9) 6-6 (7-5) Nishikori

    BBC Radio 5 live sports extra

    John Morris, who represents Nick Kyrigos: "It was a huge effort from Stan Wawrinka to get through that fourth set. With Nishikori clearly struggling, I can't see him getting over the line now, which is a shame."

  127. Game and fourth set

    Wawrinka 6-3 5-7 6-7 (7-9) 7-6 (7-5) Nishikori

    Stan Wawrinka in the fourth set

    So who thought it would be that simple? Nope.

    Nishikori was two shots away from a place in the semi-final, but Wawrinka then wins the next point for set point - and he is serving.

    Nishikori's return goes long. Ladies and gentleman, boys and girls, we have a fifth set.

  128. Tie-break

    Wawrinka 6-3 5-7 6-7 (7-9) 6-6 Nishikori

    Hutchins and Chan have thrown away a large lead in the first set of their mixed doubles semi-final, and Wawrinka is in danger of losing a similar good position in this tie-break. He was 4-0 ahead, now it is 5-5. Nishikori two points away from the match.

  129. Mixed doubles semi-final

    Piers Newbery

    BBC Sport at Flushing Meadows

    Hutchins and Chan

    "They were 5-0 up after 15 minutes, they are now 7-5 down after 42 minutes. And just to rub salt in the wound, Hutchins and Chan led 0-40 in the final game. That could be a tough set to recover from."

  130. Tie-break

    Wawrinka 6-3 5-7 6-7 (7-9) 6-6 Nishikori

    We are on course for five sets. Wawrinka is 4-0 up in the tie-break. Three hours, 26 minutes and counting so far for this match.

    Kei Nishikori in the fourth set

    How will Nishikori's fitness hold up? What a test for him. Can he come through it? We will see, so stay with us. Sleep is overrated anyway.

  131. Tie-break

    Wawrinka 6-3 5-7 6-7 (7-9) 6-6 Nishikori

    Nishikori holds the 12th game to love. And for the second successive set we have a tie-break situation. Can Nishikori take it to move into his first Grand Slam semi-final?

  132. Post update

    Piers Newbery

    BBC Sport at Flushing Meadows

    "Hutchins and Chan have a bit of a shocker after racing into a 5-0 lead. Two double faults in a row see Hutchins broken in game nine and Mirza levels it up on serve at 5-5. The best guess is we're up to around 200 spectators now."

    Ross Hutchins and Yung-Jan Chan are playing Sania Mirza and Bruno Soares, the top seeds, in the semi-finals of the mixed doubles.

  133. Post update

    Wawrinka 6-3 5-7 6-7 (7-9) 6-5 Nishikori*

    Wawrinka takes the 11th game of the fourth set to love. We're all starting to look at which of the tables at the BBC offices we will be sleeping on later.

    For those waiting for Andy Murray, and let's face it, that's probably most of us, we still have Serena Williams to play first after the conclusion of the Wawrinka v Nishikori match.

    But, on the flip side, this is a great encounter between these two players.

  134. Post update

    *Wawrinka 6-3 5-7 6-7 (7-9) 5-5 Nishikori

    Five-five. Fourth set. Two sets to one to Nishikori.

  135. Post update

    Wawrinka 6-3 5-7 6-7 (7-9) 5-4 Nishikori*

    BBC Radio 5 live sports extra

    John Morris, who represents Nick Kyrgios: "That was probably Stan's best bit of tennis for half an hour. He was very aggressive, coming into the net and Nishikori, whether it was through fatigue or weight of shot, was opening his racquet face."

    Stan Wawrinka in the fourth set
  136. Post update

    Wawrinka 6-3 5-7 6-7 (7-9) 5-4 Nishikori*

    A missed volley from Nishikori at 40-15 down gives Wawrinka a 5-4 lead. Nishikori, who edged out fifth seed Milos Raonic of Canada in a five-set thriller on Tuesday, is now serving to stay in the fourth set. One more break for Wawrinka and it will be a second consecutive five-setter for the Japanese.

  137. Post update

    *Wawrinka 6-3 5-7 6-7 (7-9) 4-4 Nishikori

    The players are rattling through the games and there is no more showboating from Nishikori. It is all business now as he pulls it back to 4-4.

  138. Get involved

    #bbctennis

    Rachael Collins: Wishing Wawrinka v Nishikori was on the telly - it's sounding like a thrilling match from live text coverage #bbctennis.

    Katie O: Tried to have a nap but not sleepy yet. Coffee for me... #bbctennis

    John McEnerney: It will be some story if Nishikori beats Stan, test of both their metal! Can KN close it out or can SW fight back & win?

  139. Post update

    Wawrinka 6-3 5-7 6-7 (7-9) 4-3 Nishikori*

    Right, this game is moving into the critical phase. Wawrinka maintains the pressure by taking the seventh game of the fourth set, but the world number four, seeded third in the absence of Rafael Nadal, trails by two sets to one.

  140. Murray's match build-up

    Djokovic v Murray (02:00 BST approx)

    Andy Murray spotted on the practice courts - with coach Amelie Mauresmo overseeing the session.

    Looks like he'll have plenty of time to warm up with the way this Wawrinka vs Nishikori match is going.

    If the British number one finds a spare minute or two in his lengthy preparation, perhaps he'd care to read this article about how he can beat Novak Djokovic - according to the stats.

    Some British fans are in. They may not have been overly excited when they found out Murray was playing in the second, not first, session of the day.

    US Open
  141. Latest scores

    Brit Hutchins cruising in first set

    Ross Hutchins and Yung-Jan Chan have made an excellent start in their mixed doubles semi-final. The pair are 4-0 up in the first set against top seeds Sania Mirza and Bruno Soares.

  142. Post update

    *Wawrinka 6-3 5-7 6-7 (7-9) 3-3 Nishikori

    A double fault from Nishikori leaves it at 30-30 on his serve. But a powerful forehand then takes the Japanese to game point, before Wawrinka takes it to deuce.

    Wawrinka v Nishikori

    The Swiss then has a break point but can only clip the top of the net with his shot. With that, we have now been playing for three hours. So who is staying awake then for the whole night? Does it really matter if you're a bit tired tomorrow?

    By the way, Nishikori then takes the game. A mini-opportunity for Wawrinka evaporates.

  143. Post update

    Wawrinka 6-3 5-7 6-7 (7-9) 3-2 Nishikori*

    Little excitement so far in the fourth set and it is all quite routine. Wawrinka is untroubled and moves into a 3-2 advantage.

  144. Post update

    *Wawrinka 6-3 5-7 6-7 (7-9) 2-2 Nishikori

    Despite the treatment on his toe, Nishikori then holds his serve for 2-2.

  145. Post update

    Piers Newbery

    BBC Sport at Flushing Meadows

    "After fighting through the multitudes at the Food Court, a brave handful have made it to Armstrong to see if Ross Hutchins can make his first Grand Slam semi-final, alongside Taiwanese partner Yung-Jan Chan. The theme from 'Fame' blasts around the empty arena, weirdly."

    Hutchins and chan

    Brit Hutchins and Yung-Jan Chan face the top seeded pair of Sania Mirza (India) and Bruno Soares (Brazil) in the semi-finals of the mixed doubles.

  146. Post update

    Wawrinka 6-3 5-7 6-7 (7-9) 2-1 Nishikori*

    After Nishikori makes it 1-1 in the fourth set, Wawrinka takes the next for a 2-1 advantage in the fourth set.

    But hold on just a minute. Nishikori then has to call for medical attention. He has been suffering with a toe problem, and has some nasty blisters under a bandaged toe. He leads 2-1 in sets and is having to play through the pain barrier.

    He does not look comfortable out there. The physio wraps his foot in a new bandage and Nishikori should be OK to carry on. He is aiming to become the first Japanese player to reach a Grand Slam semi-final in the Open era so will definitely not want to have to withdraw.

  147. Post update

    Wawrinka 6-3 5-7 6-7 (7-9) 1-1 Nishikori

    Stats fans rejoice.

    So far, these are some of the figures.

    First serves in: Wawrinka 52%, Nishikori 65%

    Winners: Wawrinka 16, Nishikori 13

    Unforced errors: Wawrinka 19, Nishikori 13.

    Back on the court, Nishikori makes it 1-1.

  148. Post update

    Wawrinka 6-3 5-7 6-7 (7-9) 1-0 Nishikori

    Wawrinka takes the first game to love. He looks angry and like he means business in the fourth set.

  149. Men's singles quarter-finals

    Djokovic v Murray (02:00 BST approx)

    Don't forget, the main event of the evening / night / early morning is the men's quarter-final between Andy Murray and Novak Djokovic.

    This is how the pair have got on against each other.

    Murray v Djokovic

    The pair have met in four Grand Slam finals. Murray won the 2012 US Open and 2013 Wimbledon finals, with Djokovic taking the 2011 and 2013 Australian Open titles.

    Their match at Flushing Meadows is scheduled to start no earlier than 02:00 BST on Thursday morning, but with this Wawrinka v Nishikori encounter turning into an epic, that time may well be pushed back a bit.

  150. Post update

    Brit-watch

    A quick round-up of the British juniors in action at Flushing Meadows:

    Katie Swan (pictured below) lost to the ninth-seeded Ukranian Anhelina Kalinina 6-3 6-2 in round two of the junior girls' singles.

    Katie Swan

    In the junior girls' doubles, 17-year-old Isabelle Wallace and her Romanian playing partner Ioana Loredana Rosca lost a match tie-break to go down 6-2 1-6 11-13 to fourth seeds Jelena Ostapenko (Lat) and Olga Fridman (Ukr) in round two.

    But British compatriot Maia Lumsden did make it through to the third round of the junior girls' doubles with her playing partner Fanni Stollar (Hun). They upset Russian eighth seeds Anna Kalinskaya and Evgeniya Levashova 6-3 7-6 (7-4).

    British duo Freya Christie and Swan will be hoping for similar success in their match later on court seven against second seeds Anhelina Kalinina (Ukr) and Iryna Shymanovich (Blr).

  151. Game and third set

    Wawrinka 6-3 5-7 6-7 (7-9) Nishikori

    A thrilling set ends with Nishikori moving into a 2-1 lead. He lost the first set 6-3 but has fought back to take the next two 7-5, 7-6 (9-7). Great entertainment at Flushing Meadows.

  152. Tie-break

    Wawrinka 6-3 5-7 6-6 Nishikori

    Ever get the feeling this is going all the way? One set all, 5-5 in the tie-break.

  153. Tie-break

    Wawrinka 6-3 5-7 6-6 Nishikori

    The floodlights are on, even though we have bright sunshine at Flushing Meadows. Wawrinka has the advantage now at 5-3, after a 24-shot rally ends with Nishikori sending a cross-court shot wide.

    Stan Wawrinka vs Kei Nishikori in the US Open semi-finals
  154. Tie-break

    Wawrinka 6-3 5-7 6-6 Nishikori

    A sensational backhand winner down the line from Wawrinka sees him recover after Nishikori had gained an early advantage in the tie-break. We are back with serve. Who will move two sets to one ahead?

  155. Tie-break

    Wawrinka 6-3 5-7 6-6 Nishikori

    Nishikori

    The purists may not be enjoying Nishikori's showboating, but the Flushing Meadows crowd are lapping it up. However, Wawrinka may not have the majority of the support from the neutrals, but has forced a tie-break in the third set.

  156. Post update

    *Wawrinka 6-3 5-7 5-6 Nishikori

    Piers Newbery

    BBC Sport at Flushing Meadows

    "Nishikori's decision to go for a 'tweener' between-the-legs shot when serving for the set went down predictably badly with the wise and experienced heads watching from courtside - not exactly 'percentage tennis'.

    "With 90 minutes until the night session is due to start, and at least 20 minutes usually needed to get the day crowd out and the later ticket holders in, we could be looking at a delay if this goes to five."

  157. Post update

    *Wawrinka 6-3 5-7 5-6 Nishikori

    Nishikori has the whole court to aim at but sends his volley past the baseline. Are his recent efforts, that included a five-set match against Milos Raonic on Tuesday morning taking its toll?

    Well, maybe not. Some more entertainment for the crowd sees Nishikori jump, spin and hit a winner (while facing the other way) that has Wawrinka applauding. Nishikori eventually holds and is 6-5 ahead in the third set, and one set apiece.

  158. Post update

    Wawrinka 6-3 5-7 5-5 Nishikori*

    Stan Wawrinka
  159. Post update

    Wawrinka 6-3 5-7 5-5 Nishikori*

    The crowd is getting larger as the match is progressing and they are being treated to some lovely tennis. A cute drop shot from Wawrinka has Nishikori on his toes, but does enough to just about get there in time andreturn it. The Swiss then forces a volley from Nishikori, who remained at the net, but the attempt is long.

    It then becomes 5-5. You would be a brave person to bet on the winner of this one.

  160. Break of serve

    *Wawrinka 6-3 5-7 4-5 Nishikori

    Nishikori the entertainer. A lob from Wawrinka sees the Japanese player galloping back and he attempts some showboating with the shot between his legs. but, although the crowd love it, it doesn't work and hits the top of the net.

    Wawrinka then does the rest in the ninth game of the third set to break serve. This is looking like this is going to be a very long night.

    Remember, Serena Williams is scheduled to start at midnight (British time), with Andy Murray v Novak Djokovic set to start at 02:00 BST. Anyone tired yet? Stay with us. You've come so far.

  161. Post update

    Wawrinka 6-3 5-7 3-5 Nishikori*

    A huge forehand from Nishikori draws a mistake from his opponent and the 10th seed is closing in on the third set. He then challenges a point that was called out, and that takes us to a second deuce.

    Nishikori then has a set point, before slapping his shot into the net, and Wawrinka recovers to hold his serve on a hot and sweaty day at Flushing Meadows. But Nishikori is now serving to move into a 2-1 overall lead.

  162. Post update

    *Wawrinka 6-3 5-7 2-5 Nishikori

    Kei Nishikori
  163. Post update

    *Warwinka 6-3 5-7 2-5 Nishikori

    Nishikori has come alive now. There's more aggression in his strokes as Wawrinka grows increasingly frustrated.

    A Wawrinka return goes long for 40-30 and Nishikori sends down a fierce first serve to take the game.

  164. Post update

    Warwinka 6-3 5-7 2-4 Nishikori*

    Stan Wawrinka

    Two break points for Nishikori at 15-40, with Wawrinka still unsettled after losing that second set.

    He puts away a short one from Wawrinka to take the first opportunity and breaks for 4-2 in the third.

  165. Post update

    *Warwinka 6-3 5-7 2-3 Nishikori

    Nishikori quickly goes up 30-0 then leaves a space to invite a sweeping single-handed Wawrinka crouched backhand for 30-15. Wawrinka levels at 30-30, Nishikori hits back but a backhand down the line brings up the deuce.

    Wawrinka blinks first on a baseline rally to give Nishikori advantage and he hammers a forehand winner on the next point to take the game.

  166. Post update

    Wawrinka 6-3 5-7 1-2 Nishikori*

    Another tight game goes Nishikori's way

  167. Post update

    Wawrinka 6-3 5-7 1-1 Nishikori*

    Wawrinka, still wearing his Manchester City-esque light blue, holds his serve and it is 1-1 in sets and 1-1 in games.

    Stan Wawrinka
  168. Post update

    *Wawrinka 6-3 5-7 0-1 Nishikori

    A change of colours for Nishikori in between sets. He changes from a red shirt to a white one, and immediately holds his serve in his new outfit.

  169. Post update

    Wawrinka 6-3 5-7 Nishikori

    BBC Radio 5 live sports extra

    John Morris, who represents Nick Kyrgios, says: "Nishikori needed a good start to the second set and if he had gone down a break then I think it would've all been over. But he has just shown what a warrior he is and what a fighter he is."

  170. Game and second set

    Wawrinka 5-7 Nishikori

    Nishikori has a set point. Wawrinka slams his first serve in the net, and then double faults. What a way to win the set. One set each.

    Kei Nishikori in the US Open quarter-finals vs Stan Wawrinka
  171. Women's singles quarter-final

    Food poisoning for Azarenka?

    Some interesting reaction coming from Victoria Azarenka's camp following her straight sets defeat by Ekaterina Makarova earlier today in the women's singles quarter-finals.

    Victoria Azarenka

    In the immediate aftermath of the tie, Azarenka's spokesman told reporters that the player had suffered food poisoning and had been vomiting in the run-up to the quarter-final, but the Belarusian would not comment further.

    "I don't really want to talk about it," Azarenka said. "I just want to give credit to my opponent. She played really well today. "Yes, I'm disappointed, but I feel like I tried my best with whatever I had. I just want to wish her good luck. That's it. I'm out of the tournament."

  172. Post update

    *Wawrinka 6-3 5-6 Nishikori

    Ben believes this set is crucial to Nishikori's changes of winning. Well, it is now 6-5 to the Japanese player. We may well be heading to a tie-break.

  173. Post update

    Wawrinka 5-5 Nishikori*

    BBC Radio 5 live sports extra

    American journalist Ben Rothenberg: "If Wawrinka gets a 2-0 sets lead then Nishikori will be out of it."

  174. Post update

    Wawrinka 6-3 5-5 Nishikori*

    It is now 5-5. Wawrinka leads by one set, with it going on serve in the second.

  175. Post update

    *Wawrinka 6-3 4-5 Nishikori

    Despite wasting a glorious opportunity to break Wawrinka in the previous game, Nishikori maintains his confidence to hold his serve and go 5-4 ahead in the second set.

  176. Men's singles quarter-final

    Federer v Monfils (01:00 BST, Friday)

    Roger Federer

    Second seed Roger Federer on Twitter: Playing my US Open quarter-final match tomorrow at 8pm EST (01:00 Friday, BST) in that beauty over there #ArthurAshe.

    Federer is in the bottom half of the draw and meets France's Gael Monfils in his quarter-final.

  177. Post update

    Wawrinka 6-3 4-4 Nishikori*

    BBC Radio 5 live sports extra

    John Morris, who represents Nick Kyrgios: "People ask if Nishikori can win a Grand Slam? But it is things like that, where he had three break points, which makes me think that he can't. He just does not have the weapons over seven matches."

  178. Post update

    Wawrinka 6-3 4-4 Nishikori*

    He had to fight hard to win the last game, and Nishikori has a chance to break Wawrinka. The Japanese player, the 10th seed in the competition, has the score at 0-40 and has three break points, which he then wastes.

    Kei Nishikori

    A huge missed opportunity. An ace for Wawrinka seals the game and a let off for the Swiss.

  179. Post update

    *Wawrinka 6-3 3-4 Nishikori

    Good spirit shown from Nishikori as he saves two break points in the seventh game. Remember, he lost the opening set 6-3 and the second set is still going with serve. Just about.

  180. Post update

    Wawrinka 6-3 3-3 Nishikori*

    Wawrinka

    Easy one this for Wawrinka. Holds his service game to love. On to the next game.

  181. Get involved

    #bbctennis

    Cameron Fawcett: Off to bed and settling an alarm for half two in the morning. The things I do for Andy Murray.

    Sam Heaton: Being on a paradise island like Santorini when Murray's playing makes it difficult to keep up with the score but I'll do my best.

    Good commitment, Sam. We're all impressed. Remember, Andy Murray plays Novak Djokovic in a match that is expected to start at 02:00 BST.

  182. Post update

    *Wawrinka 6-3 2-3 Nishikori

    Two successive double faults from Nishikori takes it to 30-30, but a loose backhand from Wawrinka, which goes long, followed by a stretch forehand into the net sees Nishikori hold his serve.

  183. Post update

    Wawrinka 6-3 2-2 Nishikori*

    Piers Newbery

    BBC Sport at Flushing Meadows

    "The first two tiers of this giant stadium are pretty full now and those braving altitude sickness are trickling into the top section. "Kei! Kei! Kei" strike up one group, determined to get their money's worth from the afternoon session. Wawrinka's deafening "Come on!" after a 136mph ace slams the door shut for now."

  184. Post update

    Wawrinka 6-3 2-2 Nishikori*

    BBC Radio 5 live sports extra

    John Morris, who represents Nick Kyrgios: "I think Stan is good enough to win this tournament. He's got match rhythm and he's playing the top players later in tournaments now. Somebody with his weapons and game is dangerous."

  185. Post update

    Wawrinka 6-3 2-2 Nishikori*

    Nishikori takes the opening two points against Wawrinka's serve in the fourth game of the second set to take a 0-30 lead. This is the first time the Swiss has been put under pressure and he responds by taking the next two points.

    After the second, he screams "come on" in an attempt to fire himself into action.

    Stan Wawrinka

    He may be a bit too pumped up though as a double fault then gives Nishikori a break point. But Wawrinka recovers to hold his serve. 2-2 in the second set.

  186. Post update

    *Wawrinka 6-3 1-2 Nishikori

    Gigi Salmon

    BBC Radio 5 live sports extra commentator

    "You can see Nishikori thinking he's got a chance here."

  187. Post update

    *Wawrinka 6-3 1-2 Nishikori

    Faultless from both players in the second set. Nishikori holds his serve for a 2-1 lead.

  188. Post update

    Wawrinka 6-3 1-1 Nishikori*

    The crowd is building and we should have some great action later on. Wawrinka does enough to make it 1-1 in the second set. Remember, the winner of this match will play either Novak Djokovic or Andy Murray in the semi-finals.

  189. Post update

    *Wawrinka 6-3 0-1 Nishikori

    Maybe Nishikori has heard John's words. He takes the opening service game of the second set to love.

  190. Post update

    Wawrinka 6-3 Nishikori*

    BBC Radio 5 live sports extra

    John Morris, who represents Nick Kyrgios: "Kei Nishikori has to believe he has a chance or he could fold very quickly. He needs to get into his opponent's head - and say 'I'm not going anywhere'."

  191. Post update

    Piers Newbery

    BBC Sport at Flushing Meadows

    "Two winners and a first-serve percentage of 44% is not going to get it done for Nishikori.

    Kimiko Date-Krumm

    "There's better news for his compatriot Kimiko Date-Krumm, who has just reached her first Grand Slam doubles semi-final at the quite incredible age of 43 years and 11 months. Nishikori probably feels like your average 43-year-old right now."

  192. Game and first set

    Wawrinka 6-3 Nishikori

    Nishikori punches in a backhand volley to make it 30-30 in the ninth game. but a deep forehand shot from Wawrinka sees Nishikora then dump his next shot into the net.

    The Swiss has the first set point of the match, but wastes it with a double fault, slashing his second serve into the net. A second set point also goes long, but takes his third chance with a powerful ace down the middle.

    The opening set only took 33 minutes and the third seed leads by one set.

  193. Post update

    *Wawrinka 5-3 Nishikori

    Wawrinka takes the first point of the eighth game, but Nishikori fights back to stay alive in the first set. He needs to break serve in the next game though. The Swiss to serve for the set.

  194. Celebrity spotting

    Patrick Stewart

    US Open Tennis on Twitter: Avid tennis fan and actor Sir Patrick Stewart is ready for the day session.

    Star Trek legend Stewart might well be at Flushing Meadows to catch The Next Generation. But you will struggle to get his seat off him. I'm sure he will klingon to it. Sorry.

  195. Post update

    Wawrinka 5-2 Nishikori

    Wawrinka holds his serve to love in the seventh game. He is closing in on the first set of this match.

  196. Post update

    *Wawrinka 4-2 Nishikori

    We are just over half full in the Arthur Ashe Stadium and the Japanese fans have something to shout about as their man holds his serve, but he still trails 4-2.

    Kei Nishikori
  197. Get involved

    #bbctennis

    Stuie Neale: Hoping Andy Murray can win quick because it's a late one. I will hope to listen to it.

    We all might not be getting much sleep tonight, Stuie! But I'm sure it will be worth the tiredness tomorrow.

  198. Post update

    Wawrinka 4-1 Nishikori*

    A perfect way to end the fifth game for Wawrinka. A deep first serve sees Nishikori scrambling to get the ball back over the net, but Wawrinka has charged in and smashes a winner to take a 4-1 lead. These two players have played twice before with Wawrinka winning on both occasions. It could well become three out of three today.

  199. Post update

    Djokovic v Murray (02:00 BST approx)

    BBC Radio 5 live sports extra

    John Morris, who represents Nick Kyrgios: "If there is a match before your match, that's the toughest thing for Andy Murray tonight. It's things like eating, sleep patterns - there's a lot of different things which make it hard on the players."

  200. Post update

    *Wawrinka 3-1 Nishikori

    Have the efforts of his last-round match taken too much out of Nishikori? Well, at least he has a game on the board now. He has had to work hard to secure it though, but that could be a big confidence boost for the Japanese player.

  201. Get involved

    Skezzzaaaaaa: With the confidence from the last win Andy Murray should have an exciting match against Novak Djokovic.

    Andrew Priestley: We're in for a long night, but with these quarter-final match-ups involving these great players, I don't think we'll get bored!

    Let us know your thoughts on today's action, as well as your thoughts and predictions for the Andy Murray v Novak Djokovic match, which will be starting at about 02:00 BST.

  202. Post update

    Wawrinka 3-0 Nishikori*

    Wawrinka's excellent start continues and this is already looking a tricky task for Nishikori. The third seed comfortably holds his serve in the third game. He leads 3-0 already.

    Stan Wawrinka
  203. Break of serve

    *Wawrinka 2-0 Nishikori

    A cracking rally of 25 shots in only the second game when Wawrinka has a break point. Unfortunately for the Swiss, his last shot goes just long.

    But it does not matter as Wawrinka has a second break point very quickly afterwards and this time takes the opportunity with a big forehand winner. A pump of the fist from the Australian Open champion and it is 2-0 to Wawrinka.

  204. BBC coverage

    Wawrinka 1-0 Nishikori*

    As always you can listen to live coverage on BBC Radio 5 live sports extra. Hit the play button at the top of this page or the live coverage tab for all the action.

  205. Men's singles quarter-finals

    Wawrinka 1-0 Nishikori*

    Nishikori has an early chance to take control as he creates a break point in the first game of the opening set. But the third seed fights back to hold his serve, although it is an encouraging start for the Japanese player.

  206. Men's singles quarter-finals

    Wawrinka v Nishikori

    Route to the quarter-finals - Kei Nishikori (Japan, 10th seed)

    Round one: Beat Wayne Odesnik (USA) 6-2 6-4 6-2

    Round two: Beat Pablo Andujar (Spain) 6-4 6-1, Andujar retired

    Round three: Beat Leonardo Mayer (Argentina, 23rd seed) 6-4 6-2 6-3

    Last 16: Beat Milos Raonic (Canada, fifth seed) 4-6 7-6 (7-4) 6-7 (6-8) 7-5 6-4

  207. Men's singles quarter-finals

    Wawrinka v Nishikori

    Route to the quarter-finals - Stan Wawrinka (Switzerland, third seed)

    Stan Wawrinka

    Round one: Beat Jiri Vesely (Czech Republic) 6-2 7-6 (8-6) 7-6 (7-3)

    Round two: Beat Thomasz Bellucci (Brazil) 6-3 6-4 3-6 7-6 (7-1)

    Round three: Beat Blaz Kavcic (Slovenia) walkover

    Last 16: Beat Tommy Robredo (16) (Spain) 7-5 4-6 7-6 (9-7) 6-2

  208. 'It could be a tough afternoon for Nishikori'

    Wawrinka v Nishikori

    Piers Newbery

    BBC Sport at Flushing Meadows

    "Nishikori did not exactly leap out of his courtesy car and sprint in through the players' entrance when he arrived a few hours ago, not surprisingly bearing in mind his late/early finish on Tuesday.

    "The Japanese player came into the tournament lacking match practice after the latest in a long line of injuries, but he has certainly had plenty of court time over the last 10 days - nine hours and 19 minutes to be precise, against Wawrinka's seven hours and 52 minutes. With the temperature currently around 31C, it could be a tough afternoon for Nishikori."

  209. Men's singles quarter-final

    Wawrinka v Nishikori

    Kei Nishikori
  210. Men's singles quarter-final

    Wawrinka v Nishikori (20:00 BST approx)

    Nishikori's last 16 match against Raonic lasted four hours and 19 minutes in the Arthur Ashe Stadium, which concluded long after the other courts were quiet and all the food and souvenir vendors had pulled down their shutters. The Japanese player also needed treatment on a toe injury during the match.

    "I was very happy to see a lot of people even at 2:00 in the night," said Nishikori after his win. "I don't even know how they go back home! I'm very happy to play like that."

    But is he fit enough to play again so soon?

  211. Men's singles quarter-final

    Wawrinka v Nishikori

    We've all had days at work when you have had to stay a few extra hours to make sure the job was done. But no one likes working until nearly 2.30 in the morning.

    Kei Nishikori

    It was all looking so easy for Kei Nishikori as he eased through the opening three matches, helped by the withdrawal of Spanish opponent Pablo Andujar in round two.

    But things got a lot trickier in the last 16 on Tuesday as Nishikori battled through a five-set epic against Milos Raonic. The match ended at 2.26am, the joint latest finish in US Open history. Today he goes again.

  212. Game, set and match - Women's singles quarter-final

    Ekaterina Makarova bt Victoria Azarenka 6-4 6-2

    Speaking of women's singles quarter-finals...

    Ekaterina Makarova

    Earlier today, Russia's Ekaterina Makarova moved into the semi-finals of a Grand Slam for the first time by beating Victoria Azarenka in the quarter-finals.

    Makarova, 26, won the first set 6-4 against Azarenka, who had lost in the US Open final in both 2012 and 2013. But the 25-year-old Belarusian was not at her best and received a warning after smashing her racquet.

    Victoria Azarenka

    Makarova clinched the second set 6-2 to set up a semi-final against either Serena Williams or Flavia Pennetta.

  213. Coming up

    So first up for us is the first quarter-final in the men's competition. Third seed Stan Wawrinka goes up against Kei Nishikori, who became the first Japanese man since Zenzo Shimidzu in 1922 to get to the last eight in New York.

    In the women's competition we already know that China's Shuai Peng, who beat fourth seed Agnieszka Radwanska in the second round, will play 2009 finalist and former world number one Caroline Wozniacki in one semi-final.

    But there is no doubting the best player in the female game at the moment. Serena Williams, with 17 Grand Slam singles wins already in a very packed trophy cabinet, has cruised through four matches and not dropped a set in the process. She faces Italian Flavia Pennetta, the 11th seed, in a match expected to start at midnight British time.

  214. Welcome

    Hello, good evening and welcome to BBC Sport's live text coverage of day 10 of the US Open. We have the first two quarter-finals in the men's singles coming up, with Andy Murray expected to be on court against world number one Novak Djokovic at about 02:00 BST.

    In between those matches, we also have Serena Williams in the women's quarter-finals, while a Briton could be soon playing in a final as Ross Hutchins is in mixed doubles semi-final action.

    So make a strong coffee, bolt down the energy drinks and make sure you stay awake and stay with us. It is going to be a great night of tennis.

  215. What an evening

    We have reached the quarter-finals stages of the men's and women's singles at Flushing Meadows and what a competition it has been.

    Some have had to battle late into the night to fight their way through and make history.

    Kei Nishikori

    Others have found it much easier and are seemingly unstoppable.

    Serena Williams

    British hopes are still alive as Andy Murray has produced some of his best form of the season.

    Andy Murray

    But now Murray faces the toughest task possible. Now he faces the best in the world.

    Novak Djokovic