Jonathan Jurejko
BBC Sport at Stade de France

While we wait for KJT in the high jump element of the heptathlon, the track action captures our attention.

The home fans are particularly interested with France going in the second heat of the women's 4x100m relay.

The usual cries of 'Allez Les Bleues' greet the hosts being introduced before a hush of silence is ended by the starting gun.

The sprinters are carried round the track by a wave of noise.

The duel between Britain and France down the straight is a crowd pleaser, with the French fans more than happy with their team's efforts.

Moments later we hear shrieks from the Dutch team - they've just heard they've qualified as a fastest loser.

Tonia Couch
Commonwealth silver medallist diver on BBC TV

It will be a failed dive if Vazquez's feet touched the water before her hands and therefore it will be zero points.

It doesn't look like it will be granted. It's a real shame for her. It's really tough.

Matthew Henry
BBC Sport in Paris

A gesture towards her coach suggests Grace Reid isn't too happy with her penultimate dive.

With one round of dives to go, Reid is in ninth with the top 12 making the final. There's still a bit of work to do.

Yasmin Harper is more comfortable in sixth.

There was a bit of drama in that round too with Mexico's Vazquez landing her dive flat on her back. She protested, claiming she had been distracted by something.

The referees disappear to a shady corner but it doesn't look like that appeal has gone her way. The result is a failed dive and zero points from that round.

Colin Jackson
Two-time world 110m hurdles champion on BBC TV

The discipline that these women learnt throughout their practice allows them to be able to keep that control. Great Britain are a confident team, it would be really nice if these women could win an Olympic gold. Am I putting a gold around their neck already?

Image source, Reuters

No Dina Asher-Smith, no Daryll Neita. No problem for Great Britain!

A superb run, nice, clean changeovers and Desiree Henry maintains the lead on the anchor leg.

Team GB win in 42.03 with France second in 42.13 and Jamaica back in third.

Canada and Netherlands were fourth and fifth, respectively, but both got round fast enough to make it through to the final ahead of Ivory Coast and Australia.

After hectic individual programmes, Dina Asher-Smith and Daryll Neita aren't in the Great Britain quartet.

That means it's up to Bianca Williams, Imani Lansiquot, Amy Hunt and Desiree Henry to try and book their place in the final.

They're in lane seven with Jamaica on the outside in lane nine.

Team USA overcome a rather messy changeover between Twanisha Terry to Gabi Thomas to win heat one in 41.94 seconds.

Terry just about got the baton into Thomas' hand in time and. although that cost them the lead, Sha'carri Richardson soon got it back on the anchor leg.

USA in first, Germany second and Switzerland third. They progress to the final, Ivory Coast and Australia in fourth and fifth must wait for the second heat to see if they qualify.

Image source, Getty Images

BBC One

After Great Britain's Bradly Sinden expertly progressed to the taekwondo quarter-finals, BBC One is now showing live coverage of the athletics.

GB are in women's 4x100m relay action right now!

Bianca Cook
Two-time Olympic bronze medallist on BBC TV

We call Bradly Sinden - Mr Consistency!

He was amazing. He made it look effortless. What a start for Bradley. That would have just been a warm-up fight. A breeze in the park.

Amy Lofthouse
BBC Sport in Paris

Easy as you like for Bradly Sinden!

That felt like blink and you'll miss it - a 12-0 15-3 win over Papua New Guinea's Kevin Kassman.

It's all about spending as little time on the mat as possible, conserving all the energy for the final stages.

That was quick!

Great Britain's Bradly Sinden produces a brilliant performance to progress to the quarter-finals with a 12-0 15-3 win over Papua New Guinea's Kevin Kassman.

Fantastic stuff from Sinden, he made it look effortless.

Bianca Cook
Two-time Olympic bronze medallist on BBC TV

They have four fights today to get through. Each fight will be so hard and different technically. It gets harder on the way, you can't look too far ahead. With it now being the round system, you have to focus on that one round.

You can't have a bad round now. Round by round, point by point and kick by kick. You have to break it down.

Here is Great Britain's Bradly Sinden and he receives a huge applause from the crowd.

Sinden looks to be in superb form as he takes the first round 12-0 against Papua New Guinea's Kevin Kassman.

Sinden landed a kick to Kassman's head, causing a minor cut to the lip.

Image source, Getty Images

It's relay time again, which is enough to give any Team GB supporter sweaty palms. Let's hope that doesn't extend to the sprinters. We've had more than enough dropped batons over the years already...

There were no such issues for Great Britain in Tokyo three years ago as Asha Philip, Imani-Lara Lansiquot, Dina Asher-Smith and Daryll Neita secured the bronze medal in the women's 4x100m.

After taking bronze in Rio as well, will it be a third medal in as many Games for the British team?

They've got a tough early test of their credentials with defending champions Jamaica in their heat this morning.

BBC One

Great Britain's Bradly Sinden is looking to upgrade his silver medal he won in Tokyo as he takes on Papua New Guinea's Kevin Kassman in the round of 16.

Tune into BBC One now to watch him in action.

Diving continues on iPlayer and the Red Button.

Tonia Couch
Commonwealth silver medallist diver on BBC TV

That lead has now doubled for Chen Yiwen.

Yasmin Harper is up to fifth and Grace Reid is up to ninth from 10th.

The Brits are doing what is necessary.

Image source, PA Media

Image source, Getty Images

• Bradly Sinden and Jade Jones are British medal hopes in the taekwondo and begin their campaigns this morning - Sinden imminently and Jones from 11.00 BST.
• The 4x100m relay heats get under way on the track, with the medal races on Friday night.
• There is plenty of British interest in the sailing: Jon Gimson and Anna Burnet go in the rearranged Nacra 17 medal race from 11.18 BST, Ellie Aldridge competes in the formula kite from 13.00 and Connor Bainbridge sails in the men’s kiteboarding semi finals at around 14.40 BST.
• GB's Jack Laugher and Jordan Houlden go for diving gold in the men's 3m springboard from 14:00 BST.
• The men’s football bronze medal match between Egypt and Morocco kicks-off at 16.00 BST.
• The showpiece event in the athletics tonight is the men's 200m final at 19:30 BST, starring newly crowned 100m champion Noah Lyles of the USA.
• There are also more boxing medals to be won after 21:30 BST, first in the men's 51kg then the women's 54kg - where Bolton-trained boxer Cindy Ngamba aims to win first ever gold medal for the IOC refugee team.

Colin Jackson
Two-time world 110m hurdles champion on BBC TV

The other heptathletes will be watching Katarina Johnson-Thompson to see how she did her hurdles race. That will give them a sense of what she is capable of.

That will send shivers down your spine when you are talking about a world champion you are up against.

Image source, Getty Images

• Team GB's Katarina Johnson-Thompson started her heptathlon campaign, finishing second in 100m heat. She is eighth overall after first event.
• The Netherlands' Sharon van Rouwendaal made a late move to clinch gold in the women's 10km marathon swim in the River Seine.
• That was after organisers said the event would go ahead as planned despite ongoing concerns over water quality.

Matthew Henry
BBC Sport in Paris

Yasmin Harper is continuing her good from that won her synchro bronze. A fine third dive has moved her up to fifth in this semi-final.

The top 12 will make it through to the final.

You'd think something would have to go badly wrong from here.

Grace Reid is ninth. Chen Yiwen of China leads the standings.

Image source, PA Media