Rob Hatch
BBC Radio 5 live commentator

She's made a tremendous start. Second position already!

It's been a chaotic start - we've seen the world number one crash on the rocks and Evie Richards sail past her!

It's going to be a tense watch but what a start!

Great Britain's Evie Richards is leading the chase in the mountain biking, 19 seconds off Swiss leader Jolanda Neff after the first lap of five.

The 24-year-old is a two-time under-23 world champion. France's Pauline Ferrand-Prevot is down in sixth after a misjudgement on a technical part of the course cost her valuable time.

Karen Pickering
Swimming & diving expert on BBC Radio 5 live

Over rotation again from both Eden and Lois on that dive.

Nice synchronisation but the execution points will be a bit lower.

Yep, it's not been the best of starts for Eden Cheng and Lois Toulson in the women's synchronised 10m platform.

The Team GB pair find themselves in eighth place after their first couple of dives following an opening 43.20. It's a long way back to the medals from here.

Leon Taylor
Olympic diving silver medallist on BBC TV

Beautiful synchronisation - all the way in the air.

The judges though will not ignore the splash and the over-rotation for the execution

A long way back for the girls.

Rob Hatch
BBC Radio 5 live commentator

It's overcast. There's a little bit of a threat of rain. There's been a change to the course. It's slippery and we are already a few riders down off a little bit of a crash.

It's a really good start from Evie Richards who's gone from the second row in 14th position to the top five!

She's going to give it a right good go for Great Britain against some of the world's best.

After Tom Pidcock's brilliant gold yesterday, it's the turn of Team GB's Evie Richards to take on the challenging mountain bike course.

Richards, 24, is a two-time under-23 cyclo-cross world champion and won Commonwealth Games silver in 2018.

Among her competitors here are Sweden's 2016 gold medallist Jenny Rissveds and French reigning under-23 world champion Loana Lecomte.

Image source, Getty Images

Andy Murray and Joe Salisbury are in doubles action against Germany’s Kevin Krawietz and Tim Puet, and it's been fairly straightforward for the British duo so far.

Andy Murray rattles through his latest service game and then he and Joe Salisbury conjure up a couple of chances to break the German duos serve.

That said, a brutal smash from Kevin Krawietz stops that in its tracks, and the Germans keep their noses in front.

Team GB divers Eden Cheng and Lois Toulson are under way in the women's synchronised 10m platform.

Having won European gold in their first major event together in 2018 when Cheng was just 15-years-old, the pair also won silver in 2021.

That was their second silver medal of May, having lost out to Canada on their final dive at the World Cup in Tokyo, and Toulson said she believes they “have the potential to medal” here.

Team GB

And here is what is still on its way:

• Cycling: Team GB's Evie Richards, a two-time Under-23 world cyclo-cross champion is in mountain bike action now.
• Diving: Britain’s e former European champions Lois Toulson and Eden Cheng are competing in the women’s synchronised 10m platform final.
• Equestrian: British rider Charlotte Dujardin will be looking to add to her three Olympic titles as she joins veteran Carl Hester and debutant Charlotte Fry in the team dressage (09:00 BST).
• Gymnastics: One of the Olympics' biggest TV audiences will be expected for the women's team final (11:45-14:10 BST). The United States, led by Simone Biles, are the favourites but can Britain get in the mix for a medal?
• Rugby Sevens: Great Britain face the USA in the men's sevens quarter-finals (10:00 BST).
• Weightlifting: Britain’s Zoe Smith competes in the women’s 59kg category (07:50 BST) with Sarah Davies in action in the 64kg class from (11:50 BST).

Just waking up? Here is a run through of everything you've missed so far on day four:

• Swimming: Britain's Tom Dean claimed a stunning gold ahead of team-mate Duncan Scott in a thrilling 200m freestyle.
• Triathlon: Britain's Georgia Taylor-Brown produced a superb run to earn a silver medal in the women's triathlon, fighting back from a bike puncture which left her well adrift of the leaders. Bermuda's Flora Duffy claimed a historic first gold medal for her nation.
• Taekwondo: GB's three-time world champion Bianca Walkden is into the women's +67kg semi-final at 08:00 BST, however compatriot Mahama Cho lost to China's Sun Hongyi in the last 16 of the men’s +80kg.
• Canoe Slalom: GB's Kimberley Woods is into the final of the women's K1 event, which gets under way at 08:15 BST.
• Tennis: Japan's world number two Naomi Osaka suffered a shock third round defeat by world number 42 Marketa Vondrousova.
• Rugby sevens: Great Britain suffered a 33-7 defeat against Olympic champions Fiji in their Pool B decider. They will face USA in the quarter-finals at 10:00 BST.
• Badminton: Britain's Toby Penty beat Kai Schaefer of Germany 21-18 21-11 in his Group K men's singles match.

Alistair Bruce-Ball
Commentator on BBC Radio 5 Live

Lovely picture of joy on her face!

109 seconds, special stuff in the semi-final.

Let's hope she's got more in her for the final!

Team GB's Kimberley Woods is safely through to the Olympic final in the women's kayak single event.

The 25-year-old, competing in her first Olympics, qualified in second place in 109 seconds in her semi-final, behind Slovakia's Eliska Mintalova.

The final takes place at 08:15 BST.

Image source, Getty Images

British pair Andy Murray and Joe Salisbury made a strong start to their second-round match in the men's doubles and did not lose their momentum during the long rain delay.

Leading 2-1 when they were forced off about 04:30 BST, they again pinched the serve of German opponents Kevin Krawietz and Tim Puetz for 5-2 and held to take the opening set at the first opportunity.

Lutalo Muhammad
Two-time Olympic Taekwondo medallist on BBC TV

Bianca took a punch to the face - she showed her toughness and her grit. It got her going - and that worked out well for GB!

She didn't have a first fight - took her about 30s to get going.

The women's +67kg semi-finals, featuring Team GB's Bianca Walkden, take place at 08:00 BST.

Don't miss it!

Steve Bunce
Commentator on BBC Radio 5 Live

I thought that was a professional seasoned, veterans performance!

And now she goes to the medals.

Jonathan Overend
BBC Radio 5 Live commentator

It's a 10 point victory for Walkden who makes it into the semi-final!

John Cullen
Former Taekwondo international

Liverpool's finest - what a performance from her - professional, composed and business-like. Into the semi-final she goes.

Bianca Walkden marches on to the semi-finals!

That was very nicely done. The three-time world champion claims a rather comfortable 17-7 victory.