This is Ryan Lochte's only chance of a solo gold medal in Rio. 

Michael Phelps and Ryan Lochte have been duelling in the pool for 12 long years, and they have a good joke in the warm-up pool before this final head-to-head. Legends. 

Silver medallists Katherine Grainger and Vicky Thornley seem to have returned to the GB headquarters in Rio in the middle of an all-night rave...

1 Hiromasa Fujimori Japan

2 Dan Wallace Great Britain

3 Thiago Pereira Brazil

4 Michael Phelps United States

5 Ryan Lochte United States

6 Kosuke Hagino Japan

7 Wang Shun China

8 Philip Heintz Germany 

Chloe Tutton came agonisingly close to a medal in the final.

And afterwards she expressed frustration at finishing behind the controversial Russian Yulia Efimova.

She said: "Being in fourth place is a bit gutting, no matter who is in front of you. I would've preferred it to have been a completely clean Games.

"I couldn't help who was here. I'm not happy with it, but it's just the way it is.  People just have to get on with it. I would've preferred to have a medal." 

Orion Chuzzlewitt: Hosszu is a joke. If jokes were some kind of terrifying swimming robot.

USA's Ryan Murphy hangs on for gold in a nail bitingly close 200m backstroke final, clocking a time of 1:53.62. 

He narrowly beat Australia's Mitch Larkin to gold with Russian Evgeny Rylov taking bronze.

This race is Michael Phelps' first chance to become the only swimmer to win four consecutive gold medals in a single event.

He won this race in Athens - pipping Ryan Lochte - in Beijing, and in London.

Remarkable longevity. 

Adrian Moorhouse
1988 Olympic 100m breaststroke champion on BBC TV

Katinka Hosszu looking for her fourth gold tomorrow night and I'm not sure if there's anyone to challenge her.

Next up - Michael Phelps, Ryan Lochte, Dan Wallace...

Tom Fordyce
Chief sports writer in Rio

This may have been Fiji's first ever Olympic medal and GB's third team sprint gold in three Games, but both provided magical moments.

In the velodrome Britain's trio put right all the problems of the intervening four years, Skinner's addition earlier this year plus the power of Hindes and experience of Kenny giving their nation's track team a huge boost. 

And Fiji's story - winning gold in the sport they have defined and inspired, coached by Londoner Ben Ryan, transforming the mood of a troubled island nation - is a biopic waiting to happen.

Image source, Reuters

There was double success for Britain in singles with opening victories for Rajiv Ouseph and Kirsty Gilmour.

Ouseph, the 13th seed, defeated the Czech Republic's Petr Koukal 21-14 21-18 while Gilmour was a 21-17 21-15 winner over Sabrina Jaquet of Switzerland.

Marcus Ellis and Chris Langridge, though, were beaten in the men's doubles, losing 21-9 9-21 21-16 to Danes Mathias Boe and Carsten Mogensen.

Image source, AP

Katinka Hosszu could well end up the biggest medal winner of these Games. Nobody can live with her as she wins the semi-final in 2:06:03.

Maya DiRado is second with Belinda Hocking third. Missy Franklin, 2012 champ, is seventh.

Katinka Hosszu has taken out nearly a second on the field in the first 100m. Flying.

Can Missy Franklin find her old form? Under way in semi number two. Katinka Hosszu, the Iron Lady, is away well. 

Katinka Hosszu has three golds already from Rio. Number four coming? Missy Franklin won four in London but she has been nowhere so far this week...

1 Daria Ustinova Russia

2 Kirsty Coventry Zimbabwe

3 Belinda Hocking Australia

4 Katinka Hosszu Hungary

5 Maya DiRado United States

6 Dominique Bouchard Canada

7 Missy Franklin United States

8 Matea Samardžić Croatia 

Steve Parry
Olympic bronze medal swimmer

People said that when Mark Spitz won seven medals that it would never happen again. I do believe that there will be a guy who can win multiple gold medals, but not Games after Games like Michael Phelps.

Such is the power of Michael Phelps that in the USA they want to change the times of the swimming.

You don't win 25 Olympic medals without mastering a hectic schedule but the great Michael Phelps has got a very busy end to his evening tonight.

First he goes for gold in the 200m individual medley (03:01 BST) - up against old nemesis Ryan Lochte once more - and then, just 33 minutes later he's back in the pool for a 100m butterfly semi-final against Britain's James Guy.

Makes you (even more ashamed) to be so unfit doesn't it?

Image source, Getty Images