BBC One

USA's 400m hurdles world record-breaker Sydney McLaughlin on BBC One: "It doesn't feel real yet, I'm just processing it all. I'm super grateful, super thankful to God. I'm sure my family and my teammates back home are just elated so I'm really happy.

"You're only as strong as your team, I go out as one but there's 10,000 back home supporting me. I'm grateful to be able to represent all of them.

"I knew I had it in me, it's just about putting it all together and I was able to do that."

Niall Myant
Sailing commentator on BBC TV

The power that the number one pair from Spain are able to produce at times is quite impressive.

They are set to follow Sweden into the top of the course...

Image source, PA Media

Frazer Clarke is guaranteed at least a bronze but, with his 30th birthday approaching on Saturday, could have a dream weekend.

If the 'Eraser' beats Jalolov - who is unbeaten in 36 bouts - he goes into Sunday's gold-medal bout.

Clarke, who is from Burton-on-Trent, guaranteed himself a medal following the disqualification of his quarter-final opponent Mourad Aliev for excessive use of the head.

Clarke played down concerns over his cuts from the bout, saying: "I'm an Olympic medallist. These are little cuts. This is my job and what I do. I'm a tough man, a proud man. It will take more than a little cut to stop me."

Winning an Olympic medal is a chance of third time lucky for Clarke. He was overlooked for selection at London 2012 in favour of Anthony Joshua - his former sparring partner and eventual gold medallist - and again at Rio 2016 where Joe Joyce was picked and won silver.

Great Britain come through in ninth place on the third mark. They are still struggling.

Spain try to hold their line but they almost crash into Sweden, with New Zealand close by to their right.

They have to pull out and it means they will fall slightly behind Sweden.

Australia are in front as the four race towards the top of the course.

Simon Gleave
Head of sports analysis, Nielsen Gracenote

Sky Brown, 13 years and 28 days old, is the youngest athlete representing Great Britain to claim an Olympic medal, surpassing Sarah Hardcastle, who took two medals in swimming in 1984 when she was 15 years old.

There's a real battle for silver between Sweden and Spain.

Great Britain go round the second mark in ninth place. They head out to the right looking for a better breeze. They have a way to go.

Niall Myant
Sailing commentator on BBC TV

So far, the opportunity to improve from fifth on the leader board - it's not going according to plan. Luke Patience and Chris Grube desperately need to make up some places.

Teams are having to fight very hard here.

Image source, Getty Images

This is the last Olympics for the single sex 470 class – it will become a mixed gender event at the Paris Games in three years time.

Patience, who won silver at London 2012 in this class, is all for greater gender equality but is frustrated by the move.

“Equality should mean equal opportunity for men and women, and I’m not sure we’ve quite got that right,” he said.

“At the moment we’re forcing in more female competitors and forcing out a load of men. That’s not equality, it’s just balancing a spreadsheet.”

Great Britain's Chris Grube and Luke Patience are playing catch up but they are in decent shape.

As it stands, Australia are cruising to gold. Sweden look set for silver but Spain are challenging them in a bronze medal position.

Shirley Robertson
Two-time Olympic gold medallist on BBC TV

The medal race is a very different mentality to the 10 races they've spent all week doing - it's short, there's no room to breathe, you're surrounded by your competitors, the helicopters are above, it's stressful.

Great Britain's boxers have already secured a record six medals at Tokyo 2020 - but the colour of four of those still have to be decided.

Two of those medals will be determined in the next hour or so.

Super heavyweight Frazer Clarke is the first of the quartet in action, going toe-to-toe with the fearsome Bakhodir Jalolov of Uzbekistan in the first semi-final at 07:03 BST.

Then, GB team-mate Ben Whittaker faces Cuba's Arlen Lopez, a middleweight gold medallist at Rio 2016, in the light-heavyweight gold-medal bout at 07:35.

On Thursday, Galal Yafai goes in the flyweight semi-finals before Lauren Price's middleweight semi-final bout on Friday.

Pat McCormack has already won a silver medal after losing a hard-fought men's welterweight contest to Cuba's Roniel Iglesias yesterday, while Karriss Artingstall took bronze in the women's featherweight.

Image source, Reuters

Denise Lewis
Olympic heptathlon gold medallist on BBC TV

Crunching numbers - does anyone tell you what you need to do in the next event for points?

"No-one comes to you with the score. You're aware as an athlete but you cannot think about previous championships. Now Katarina has learnt to treat each event as it comes.

"She's come into this competition because she's capable of a medal. What she doesn't know is what her body will allow her to do."

The men's 470 medal race is under way with GB's Luke Patience and Chris Grube in action. They sit fifth going into today's race.

It's Patience's 35th birthday today too! An Olympic medal would be a pretty decent present wouldn't it?

Image source, Getty Images

Great Britain's Benjamin Whittaker goes for gold in the men's light heavyweight boxing final.

He takes on Cuba's Arlen Lopez at around 07:35 BST. Before that, Frazer Clarke is guaranteed a bronze but will be fighting for a place in the gold medal bout at 07:03 BST.

GB's Hannah Mills and Eilidh McIntyre are guaranteed a medal in the 470 sailing class when it concludes (07:30-08:00 BST).

And Jason Kenny begins his quest to win track cycling's men's sprint title for the successive Olympics at 07:30 BST.

Thanks Gaz! A Gold medal-worthy shift. Straight to bed after breakfast or a tank of coffee to make it through?

You could all do with some coffee too because we've got a big few hours coming up in sailing, cycling and boxing...

Right, the canteen has opened for breakfast which is my cue to scarper! Time to hand over to Emma Sanders to take you through some of the morning action.

All yours, Em!

Track and field action resumes from 10:30 BST this morning, but here's a few of the highlights from the first session overnight.

Simon Gleave
Head of sports analysis, Nielsen Gracenote

Kokona Hiraki and Sky Brown are the youngest Olympic medallists since Berlin 1936.