A reminder of the swimming setup.

The big American hope is in the call room and primed for the men's 100m butterfly.

Ladies and gents, Mr Caeleb Dressel. The world record is at 49.5. Eyes down...

Image source, .

Team GB are chasing gold in the women's rugby sevens and face France in the semi-finals from 03:30 BST.

The medal matches start at 09:30.

Here's how the British women reached the last four.

If you're thinking about going to bed, or are already in bed and thinking of hitting the off button on the laptop... think again.

There could well be more British medals on the way in the next hour or two with swimming taking the focus.

And then we've got the women's rugby sevens semi-final between Team GB and France at 03:30.

Is that enough to keep you going? Hit the thumbs up if you're staying with us. Are you hardcore?

Coming up in the pool...

Image source, .

After last night's excitement on the BMX track with a gold and silver for Britain's Bethany Shriever and Kye Whyte respectively, we're shifting gear a little tonight.

It's time for the freestylers to take over.

Former chef Charlotte Worthington, twice a World Championships bronze medallist goes in the women's competition from 02:10, while Declan Brooks, also a World bronze medallist, is in the men's competition from 03:20.

It's qualifying for Sunday's final - we'll keep you posted as to how they're getting on...

A reminder if you're just tuning in of the joyous moment of day seven, as GB grabbed some thrilling BMX medals.

Paula Radcliffe
Women's marathon world record holder on BBC TV

All of these men will have watched that first heat and know that if the first lap is not quick then they really need to get it right in that in the closing stages.

Steve Cram
Athletics commentator on BBC TV

When you see a heat like that when five or six of them could come through, Daniel Rowden should be pretty pleased with that.

Daniel Rowden qualifies for Sunday's semi-finals after finishing second in his heat after a solid run.

That's a decent effort by the 23-year-old who finishes in a time of 1:45.73.

BBC Sport

Jessica Turner was the only GB athlete to progress from the women's 400m hurdles heats and after clocking 56.83 seconds she tells BBC Sport: "It was a very rusty run. I did well to hurdle four and it went downhill. I grit my teeth in the last 200m but I need to sharpen up. I'll have to run a PB to get into the final, I'll have to run my heart out."

Andrew Cotter
Athletics commentator on BBC TV

Oliver Dustin has ran so much better this year.

There'll be nothing for Great Britain's Oliver Dustin as he comes home deep down the field in his 800m heat. He started well but something took a hold of him and he faded.

He's sixth. Marco Arop of Canada took first.

A clocking of 1:44.9 gets Elliot Giles home in third, that gets him through his heat.

He's behind Peter Bol from Australia and Cheruiyot Rotich of Kenya takes them home in 1:43.75.

Team GB

Image source, Reuters

A motorbike crash left Elliot Giles with temporary brain damage and back and knee injuries in 2014, but the 27-year-old is hoping to make a strong impression in the 800m men's heats in Tokyo's Olympic Stadium.

No British man has won an Olympic middle-distance medal for more than 30 years but Giles, Oliver Dustin and Daniel Rowden fly the Team GB flag.

Giles' heat is at 01:50 BST, followed by Dustin at 01:58 and Rowden at 02:06

The men's 800m heats are rolling on the track now...

Great Britain's Jessica Turner is home in fourth in her women's 400m hurdles heat. She's through to the next stage as the top four qualify.

Elsewhere, American star Sydney McLaughlin - the world record holder on 51.90 - is through with ease. American gold medallist from Rio 2016 Dalila Muhammad wins through in heat five.

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

I think one of her spikes maybe got stuck in the track. It's heart breaking for her.

Total heartbreak on the track for Great Britain's Jessie Knight in the women's 400m hurdles. She has slipped and crashed into hurdle one in her first Olympics. Understandably she is devastated.

Steve Cram
Athletics commentator on BBC TV

Sha'Carri Richardson may well have started as the favourite for the women's 100m in Tokyo. I’m disappointed for the sport that she's not here. We’ve all been watching her for three or four years because she’s been a prodigious young talent and smashing records at college while grappling with how she wants to pursue the sport.

I hope we’ll see her racing the rest of the season. She could do if she wants to because her ban will finish. Next year the World Championships are in Eugene so I fully expect her back for the World Championships in 2022 and 2023 and then the Paris Olympics. The next three or four years she could be the dominant force.

Image source, Getty Images

The women's 100m final will be at 13:50 BST.

The semi-finals are at around 11:15 BST.

As Jeanette said in our last entry... mark... your... card!