And that was a real good night. Stories galore!
Catch up with the best of it on our Olympic index and I'll see you all in a few hours.
Sam Walker was Britain's hero as he staved off three match points to triumph 12-10 over Simon Gauzy in a decider to give his side a 3-2 win over France in a topsy-turvy encounter in the men's team event.
All five matches went to deciders in a clash that lasted close to four hours, with France squandering a 2-1 lead as Britain were grateful for victories from Paul Drinkhall, Liam Pitchford and Walker.
From 10-7 down in the fifth game of the fifth match, 21-year-old Walker reeled off five points in a row to clinch an unlikely victory.
Following their first-round win, Britain now take on defending champions China in the quarter-finals.
Chief sports writer in Rio
A hep heads-up for Day Two: here are the PBs for the Saturday's concluding three events for current gold/silver/bronze/fourth:
Long jump: JEH 6.63m, Thiam 6.51, Jones 6.80, KJT 6.93
Javelin: JEH 48.33m, Thiam 52.62, Jones 38.97, KJT 42.01
800m: JEH 2:07.81, Thiam 2:17.28, Jones 2:21.62, KJT 2:07.64.
Caveat: Ennis-Hill quite rightly prefers to reference to PPPBs - post-pregnancy personal bests. And don't rule Brianne Thiesen Eaton out of the battle for bronze.
Big favourite Valerie Adams of New Zealand has failed in her bid to win a third successive Olympic shot put title and had to settle for silver in Rio.
She's been pipped in dramatic style by the USA's Michelle Carter, who clinched it with her final throw of 20.63m. In the process Michelle Carter is the first American woman to medal in shot put since Rome 1960.
Hungary's Anita Marton took bronze, throwing a national record 19.87m.
Great Britain's Asha Philip said she was 'not pleased' with finishing third with a time of 11.34s.
Watch the full interview here.
Pernille Blume of Denmark wins the second semi in 24.28, Cate Campbell second for Australia.
Fran Halsall will have a chance of a medal in the final.
It is good news, bad news for British sprinters.
We have just had the final heat in the women's 100m and Great Britain's Asha Philip (pictured) qualifies as one of the fastest losers to join fellow Brit Desiree Henry in the semi-finals.
But team-mate Daryll Neita is out. She came fourth in the eighth heat, but was not one of the fastest eight losers, missing out by two hundredths of a second.
Fran Halsall wins the first semi-final for GB! A great swim to win in 24.41 seconds and move into the final!
There are many, many empty seats but the home fans in attendance have got something to cheer as Brazil's Rosangela Santos comes second in heat seven of the women's 100m heats to move into the semi-finals.
Jamaica's Elaine Thompson is the race winner, with Santos looking the happier of the two athletes. She produces a heart shape with her hands (I blame Gareth Bale for that one) and leaves the arena with a big smile on her face.
After a huge delay - with reports that a bus got lost - it's the final swimming of the night. It's just gone half 11 in Rio.
Fran Halsall of GB goes in this first semi.
Great Britain's Desiree Henry has already moved into the semi-finals of the 100m, well team-mate Asha Philip faces an anxious wait to see if she joins her.
The British sprinter finishes third in heat six, but only the top two from each heat qualify automatically with the eight fastest losers across eight races also moving forward.
Philip's time is 11.34 seconds, but she can only sit, watch and hope over the next 20 minutes to find out her future.
Britain's Sophie Hitchon after making the hammer final in 10th place tells BBC Sport:
"I made it a little bit difficult for myself because I am in better shape than that. Waiting for other throwers to see if I get through is not how I wanted it to be.
"Hopefully I will do better in the final now qualification is out of the way. My technique will be better and I will compete better. I have more experience now than in London 2012."
Here he is, the truly extraordinary Anthony Ervin receiving his gold medal for the 50m freestyle.
He auctioned his last gold medal. I hope he keeps hold of this one.
We are up to heat five of eight in the women's 100m heats. This was the closest finish yet, but with the top two automatically qualifying from each race the positions are not that important.
USA's Tianna Bartoletta (closest to the camera) finishes in 11.23 seconds, just ahead of Poland's Ewa Swoboda in 11.24 seconds. Both advance.
Anthony Ervin on when he looked at the result: "I kind of laughed. It's almost absurd I was able to do it again."
There must be a hairdressers in Rio doing a roaring trade. Only minutes after Blessing Okagbare and her purple hair moved into the 100m semi-finals, reigning Olympic champion Shelly-Ann Fraser-Pryce, sporting yellow and green hair, wins the fourth heat.
It is a time of 10.96 seconds for the 2008 and 2012 gold medallist, the fastest time we have seen so far.
USA's Anthony Ervin wins gold in the men's 50m freestyle, 16 years after winning the same title at the Sydney Olympics, with France's Florent Manaudou taking silver and USA's Nathan Adrian winning bronze. GB's Ben Proud missed out on a medal finishing in fourth.
When you have three silver medallists...
Can anyone ever win seven gold medals again, and create seven world records in the process? That is exactly what American swimmer Mark Spitz did at the Munich Olympics in 1972.
He won gold in the butterfly (100m and 200m), the freestyle (100m and 200m) and also helped USA win three relay golds.
Watch his victories with our video below.
Have a look back at Jess Ennis-Hill and Katarina Johnson-Thompson's 200m in the heptathlon.
Blessing Okagbare is not a difficult athlete to miss. And we will see more of the Nigerian with the purple hair after she came second in the third heat in the women's 100m.
American Tori Bowie, who doesn't have purple hair, won the race in 11.13 seconds, with Commonwealth Games champion Okagbare finishing in 11.16 seconds. Both move into the semi-finals.
Defending champion Jessica Ennis-Hill after finishing top of the pile on day one in the heptathlon: "It's been a mixed day. l was really happy with my hurdles and high jump. I was obviously disappointed with my shot put - that was frustrating. I was a bit down on the 200m but generally happy.
"I need to rest up and come back strong tomorrow. I'm trying to enjoy it but it's very stressful."
GB's Katarina Johnson Thompson after ending day one of the heptathlon in fourth: "I was thrilled with my high jump. After the 200m I'm a bit down. The 200m is one of my strongest events and I really wanted to drop under 23 seconds. They keep you out in the cold a long time but that's no excuse, it's the same for everyone but maybe that's why the times are down."
Anthony Ervin could well be the best story of the Games.
He retired from swimming at the age of 22, stopped telling people that he ever was a swimmer, played guitar in a band called Weapons of Mass Destruction, sold his Sydney medal to raise funds for Tsunami victims, tried to kill himself.
Three men on the one step as Michael Phelps, Chad le Clos and Laszlo Cseh all get silver for that 100m butterfly. What a moment.
Ben Proud after coming fourth in the 50m freestyle tells BBC One: "I am really chuffed. It wasn't a great swim but fourth is better than fifth.
"It's going to be a long time until the next Olympics but I fell really motivated and will really focus on the 50m.
"I am really excited to see what's going to happen in the future."
Shockwaves are currently reverberating through the sphere of women's shot put.
New Zealand's Valerie Adams has failed in her bid to win a third successive Olympic shot put title.
She's been pipped in dramatic style by the USA's Michelle Carter, who clinched it with her final throw of 20.63m - a national record.
Adams, 31, had won gold at both Beijing and London, but had to settle for silver after she failed to beat Adams with the final throw.
Hungary's Anita Marton took bronze, throwing a national record 19.87m.
Dafne Schippers of the Netherlands is one of the favourites for the women's 100m title after picking up a silver at last year's World Championships in the 100m and gold in the 200m.
Running from lane nine, she trails early on in the second of eight heats, before storming through to win in 11.16 seconds.
BBC commentator and former British Olympic swimmer
What a race! Ervin, the 35-year-old, is the oldest ever champion in the swimming pool. Unbelievable!
That is a tremendous effort! And guess what, it's another fourth place for GB with Ben Proud.
He's done it! Sixteen years after winning in Sydney Anthony Ervin wins again! He's 35. The oldest ever Olympic swimming champion.
No breath needed in the next 50m...
That was top class Charlie. Top.
Anyway, here come the men's 50m finalists. Good story here, Anthony Ervin won this event in Sydney! That's 16 years ago.
Tweet of the day.
In the first of the women's 100m heats 20-year-old British sprinter Desiree Henry claims the victory to move into the next round. She eased up as well as she crossed the line in a time of 11.08 seconds. Job done.
"It is absolutely unreal," Henry tells BBC Sport. "Every round counts and I know I have put in the work. My coach told me to go out and have fun.
"It is nice and relaxed behind the scenes, but I have a job to do on the track and I need to be focused - that is what got me here. Today's performance was amazing, but the pressure is on tomorrow and big things can happen."