Leon Taylor
Olympic diving silver medallist on BBC TV

That's more like it from Noah Williams but he will need to dig deep to get through.

He still has a long way to go to get back into contention to make it into the 18 cut.

Noah Williams is climbing up the leaderboard. He's up to 17th after his inward 3½ Somersaults - his highest yet.

But there is still plenty of work to be done.

Team GB's Katy Marchant will race against Japan's Yuka Kobayashi in her opening heat of the women's sprint event, in about 15 minutes' time.

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

It was the perfect ride but Jack Carlin just couldn't get past him - he has to try and get in front of Harry Lavreysen in the next race or try and surprise him.

So here goes Jack Carlin, biding his time behind Harrie Lavreysen as the Dutchman glances over his shoulder, before they hit the accelerator as the bell rings.

Carlin tries to come round the outside but it is Lavreysen who edges the opening race.

The British rider will need to win the next two if he's going to reach the Olympic final.

Jack Carlin goes in the second of the semi-final heats. Both are best-of-three races.

Dutchman Jeffrey Hoogland beats Russian Denis Dmitriev in their opening ride.

GB's Katy Marchant has bounced back from her crash in the keirin yesterday to qualify in the eighth quickest time for the women's sprint today.

Thursday saw the end of Jason Kenny's nine-year reign as men's Olympic sprint champion but could Friday herald a new British king of the velodrome in Tokyo?

Jack Carlin flew into the semi-finals with a number of impressive rides and now faces the man who ended Kenny's tenure, Dutch world champion Harrie Lavreysen.

Simon Gleave
Head of sports analysis, Nielsen Gracenote

Julio La Cruz is the first boxer to win Olympic gold at light heavyweight and heavyweight after his win in the former at Rio 2016.

His victory gives Cuba their eighth gold medal in the Olympic heavyweight class, taking them ahead of the United States (7).

BBC One

GB's gold medallist Giles Scott: "I told myself after my race that I'd never watch it again, this is the first time I've had a little snapshot of it ...and I still don't want to watch it back. It was amazing to just about do enough, nice to provide a little bit of drama there as well.

On the Finn class being scrapped: "The Finn's gone, it's really quite sad. As Team GB, we've got such an amazing history, it's been a medal that we've won since 2000, first with Iain Percy and then with Ben Ainslie. It is really sad to see it move on. It's those younger guys that aren't going to get the amazing chance that I had, that's the sad thing.

"Sad times for the Finn class, but equally I think the sport of sailing is in a great spot. We march on into the future."

• Cyclist Jack Carlin takes on Dutch world champion Harrie Lavreysen in the best-of-three men's sprint semi-finals from 08:10.
• Katie Archibald and Laura Kenny then ride for GB in the madison at 09:15.
• Andrew Butchart is the sole British representative in the men's 5,000m final (13:00), while Laura Muir races in the women's 1500m (13:50)
• Dina Asher-Smith is back and looking to lead Great Britain's bid for a relay medal in the women's 4x100m relay final (14:30).
• Meanwhile, American Allyson Felix aims to become the most-decorated female track and field athlete of all time by winning her 10th Olympic medal in the women's 400m final (13:35)

Steve Parry
Olympic bronze medal swimmer on BBC Radio 5 live

Much better, limits the splash there, he rotates forward three and a half times - low degree of difficulty but execution wise that was much better.

Leon Taylor
Olympic diving silver medallist on BBC TV

Tom Daley with a kick in the right direction, although he does lose his feet a little bit there.

The judges did see it and they hammered him for it. Even if you are Tom Daley you can't get away with helicopter feet!

That's more like it from Tom Daley.

He loses his footing slightly but his coach Jane Figueiredo seems happy with his second dive.

He scores 68.80 and after round two, he's 18th in the standings and grabbing the last spot for Saturday's semi-finals.

Leon Taylor
Olympic diving silver medallist on BBC TV

Noah Williams is having a little bit of a wishy-washy day at the office.

Huge over-rotation there .

Noah Williams over-rotates out of his second dive and scores, 48.6 putting him on a total of 100.8 as it stands.

The Team GB man still has four dives left to put things right here.

BBC Red Button

Talking of splash (or hopefully lack of it).

If you want to watch the men's 10m platform preliminaries then click the Red Button and let Kat Downes guide you through the action. While sticking with us on the live text, of course...

Paul Williams: So many questions about the pool in the middle of the Tokyo stadium pitch, but given the heat today, the main one has to be...once the event is over, are competitors allowed to dive/ jump in, in celebration, to cool off?

Excellent question, Paul, could stage the fencing round in there to keep them cool, or have it played out on a podium above and see the losers tumble into the splash in a modern pentathlon meets Total Wipeout meets Gladiators-style mash-up?