Duncan Scott is second after 100m.

And they're away.

Strong Team GB interest in this one in the shape of Scott Duncan and Tom Dean. Duncan goes in lane three and Dean is in lane five.

Great Britain's team of Tom Hall, Patrick Huston and James Woodgate have advanced to the quarter-finals of the men's team event.

The trio beat Indonesia 6-0 and will meet the Netherlands later today.

So, gold to Canada while silver went to China's Yufei Zhang and silver to Emma McKeon of Australia.

That was a tight finish. Margaret MacNeil didn't even know she had won. 'Oh my God' she yells when she looks at the scoreboard.

MacNeil's finishing time is 55.59.

Strong start by China's Yufei Zhang. She's first at the turn.

And we're away!

The finalists in the women's 100m butterfly are coming out to no fans in the Tokyo Aquatics Centre.

There is no GB interest in this one - but there is a big shiny gold medal on offer to the winner.

Rebecca Adlington
Double Olympic gold-medal winning swimmer on BBC TV

We need that wow/breakout moment to get things rolling.

It would be nice to see that flat atmosphere lift and get the ball rolling.

Right, folks. It's time to stick our swimming goggles on.

There's a big hour coming up in the pool.

We're counting down to the 100m breaststroke final featuring hot favourite Adam Peaty which is scheduled for 03:12 BST.

First it's the women's 100m butterfly final at 02:30.

The Dutch rowing team has agreed to separate itself from other competitors after one of its athletes, a coach and a staff member all tested positive for Covid-19.

TeamNL rowing coach Josy Verdonkschot tested positive and went into a 10-day quarantine after 21-year-old single sculls competitor, Finn Florijn, also turned up a positive test.

A staff member on the Dutch rowing team came back with a positive test last week as well.

Matt P: Great to see Team GB on the medal board and best of luck to Peaty in the swimming.

Sibby17: Sinden almost got gold, I thought he had it at one stage. Not too long to wait for GB's first gold though, in the swimming pool probably.

Ray: Well done Chelsie, Coventry is proud of you. Great achievement.

Team GB
Team GB

Image source, Getty Images

Tom Daley was 18 when he won bronze at London 2012.

He's now 27 and starting his fourth Games - paired with Olympic debutant Matty Lee in the 10m synchro final.

It starts at 07:00 BST at the Tokyo Aquatics Centre.

What does it mean to win a medal at the Olympics?

Ask China's Shi Tingmao and Wang Han, Brazil's Kelvin Hoefler, Britain's Chelsie Giles and Japan's Yui Ohashi.

Tears of joy. A scream of elation. A raised arm. A lifetime's work.

Image source, Getty Images

Image source, Getty Images

Image source, Getty Images

Image source, Getty Images

Judorick: An absolutely vital medal for our sport. Medals at this level justify the funding. So congratulations and thank you to Chelsie.

DAB Hand: Chelsie did well. The women's division she participated in is full of tough opponents. And this Olympics has shown that favourites means nothing.

Panda: From 10th in the world to bronze is a good result.

We're about half an hour away from the start of a busy day in the pool.

There are four finals including the men's 100m breaststroke featuring hot favourite Adam Peaty and James Wilby.

Will Peaty deliver a first gold for Team GB? Not long to go before we find out.

Jill Douglas
Rugby reporter on BBC One

I think GB will be very pleased with the way that game developed.

They will have to step up against Japan.

The funding for GB was in jeopardy but they are here defending that silver medal.