Image source, BBC Sport

A perfect start from Chris and Gabby Adcock as they comfortably win the first end 21-13 against their Chinese opponents.

That means the world-ranked seven pair are halfway to victory in their opening round robin match.

Andy Murray is having a busy night. He and Heather Watson will play in the mixed doubles against Spain's Carla Suarez Navarro and David Ferrer, after Romanian pair Monica Niculescu and Florin Mergea withdrew from the competition.

Biles heads for all-around gold, Downie errorpublished at 21:32 British Summer Time 11 August 2016

21:32 BST 11 August 2016

Gymnastics: Women's all-around final

World champion Simone Biles trailed after the second event, but the American was not behind for long after collecting 15.433 on beam to move above Russia's Aliya Mustafina, who could only manage 13.866 on the same apparatus.

Biles now has a huge lead and will become the Olympic champion unless she has a disaster on her last discipline - the floor.

But it is bad news for Great Britain's Ellie Downie. On the uneven bars she loses momentum and her routine grinds to a halt, before an unsure landing sees more points taken off. The total of 13.783 means she is down to ninth and needs something sensational on the final event - the beam - to win a medal.

Sir Chris Hoy
Six-time Olympic cycling champion on BBC One

That was a fantastic performance from GB to break the world record here. The conditions are not quick in here. The environmental conditions are a bigger factor on times than the track surface.

A Kenyan athletics coach has been sent home from Rio after allegedly posing as an athlete and giving a urine sample.

Kenya said sprint coach John Anzrah "presented himself as an athlete" and "even signed the documents" for the doping test.

"We cannot tolerate such behaviour," said Kip Keino, chairman of the National Olympic Committee of Kenya.

Anzrah is the second Kenyan official to be sent home over doping issues after track and field manager Michael Rotich.

Anna Thompson
BBC Sport in Rio

The GB women were keeping a close eye on the USA team but their new world record remains intact after Sarah Hammer and co come in a second behind.

The pens are a hive of activity with cyclists warming up and warming down. I can see Sir Bradley. He's got his headphones on and is in the zone.

He'll be up shortly in the men's team pursuit qualifying.

Next up for GB are the men's team sprint. Great Britain's trio of Philip Hindes, Jason Kenny and Callum Skinner are in the fourth and last heat against Venezuela.

The fastest two winning teams race for the gold and silver medals, and the other two winning teams race for the bronze medal.

Clear?

It may be only qualifying but GB's women have broken the world record in the women's team pursuit. Katie Archibald, Laura Trott, Elinor Barker and Joanna Rowsell-Shand smash the world record by a second with a phenomenal time of 4:13.260.

I make it that GB will race Canada on Saturday in the semi-final, win that and they are in the gold/silver medal race.

Chris Boardman
Olympic cycling champion on BBC TV

The danger for the British team is that the USA made a lot of mistakes on that ride. If they clean that up they could easily make that time back. We could have a fight on our hands here.

USA come through to clock 4.14.286, a second back on Team GB but comfortably the second best team out there. 

The final is on Saturday night. GB look good for gold...

USA have hit the wall. The wheels have come off. Not literally, but they are a second down now on GB...

USA working hard to keep up this world record pace. After 2,500m they are 0.7 of a second ahead of GB...

GB's team smashed the field with their time but hello, the last team to go, United States, are a second up after the first minute.

Can they keep this up? A world record under threat?

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Image source, BBC Sport

Can Downie make British gymnastics history?published at 21:15 British Summer Time 11 August 2016

21:15 BST 11 August 2016

Gymnastics: Women's all-around final

After two of four events, Ellie Downie is seventh in the women's all-around final - and on course to set a new record for Great Britain.

Dave Barlow: World record for women and Olympic record for men- what a start for @BritishCycling

JV - John Vincent: We're looking pretty good at this cycling round in circles lark

Miss Cynical: Wow WR in qualifications for #TeamGB women team pursuit!

Jo Konta is out of the Olympics, courtesy of Angelique Kerber. Second-seed Kerber celebrates a comprehensive victory, completed in just over an hour, while a disconsolate-looking Konta trudges off.