Duncan Scott doesn't have much time to celebrate making it through to the 100m freestyle final because he's in the GB team for the 4X200m freestyle relay final at 03:38 BST.

Right, time for our first final of the night - the women's 200m freestyle.

Duncan Scott is fourth in his 100m freestyle semi-final  and he's through to the final in seventh! Fantastic stuff.

Tom Fordyce
Chief sports writer in Rio

Ripper of a night in prospect at the Aquatic Centre - Phelps v Le Clos v Cseh, Britain's Siobhan-Marie O'Connor having a crack at the Iron Lady, Katinka Hosszu, and then GB v USA v Aussie in the 4x200m freestyle. Noisy and sticky as a 2am nightclub too, albeit with less neon and healthier looking bodies.

Defending 100m freestyle champion Nathan Adrian won that first semi-final, finishing ahead of Cameron McEvoy and Caleb Dressel.

Here comes Duncan Scott. In a couple of minutes, he could well be in an Olympic final...

Duncan Scott, by the way, was hugely impressive in the heats earlier. The 19-year-old set a new British record, finishing in 48:01s. 

Bring his A-game and he has a chance of making it through this semi-final

BBC Radio 5 Live

Right then, action about to get under way in the pool.

First up, the first men's 100m freestyle semi-final. GB's Duncan Scott is up in the second.

Love Bert!

Courtney Rowan: Don't know if I'm more in love with @chadleclos, external or @bigbertleclos, external

Stephen Williams: Bert Le Clos - true gent, amazing man and family, how can you not want success for Chad  

Yes! One of the absolute stars of London 2012 is with the BBC commentary team poolside. Bert le Clos, Chad's father, is with Helen Skelton and co. Who can forget his reaction after Chad beat Michael Phelps? Brilliant.

Chad is in Rio having to deal with both his parents battling cancer. 

Katie Ledecky, who at just 15 won gold at London 2012, has been tipped to take a hefty medal haul away from Rio by the time these Games are done.

The 19-year-old American already has two medals, having won 400m freestyle on Sunday and taken silver in the women’s 4X100m freestyle relay.

She goes in the women’s 200m freestyle final - the first final tonight/this morning - at 02:19 BST.

Any snacks Dave? There's got to be snacks. My colleague's just had a chocolate biscuit followed by a piece of cheese. Not sure about that combination myself.

Gymnasticspublished at 01:46 British Summer Time 10 August 2016

01:46 BST 10 August 2016

Claudia and her GB team-mates finished fifth in the gymnastics team final earlier today. 

Genuinely can't get enough of Michael Phelps' game face. 

He looks a lot like I do at 6am when I can't get to sleep after working a night shift.

Scenes in the handball! 

Egypt score in the last seconds of the game to beat London 2012 silver medallists Sweden for the first time.

And here's the schedule in full.

Image source, British Swimming

Not long until the swimming starts. There are four Brits in the pool as well as the GB relay team. Duncan Scott is the first in the water at 02:03 BST.