Incredible. Rafael Nadal had no right to pull that off. Frightening speed to cover the court and the pass was a whippy delight. Quite brilliant.

You couldn't write this. Nadal has three break points. He's roaring and punching the air. Plenty of Spanish fans in there too. Great atmos.

Some incredible noise on Centre Court. Juan Martin del Potro is serving for the match and a place in the final.

Sir Chris Hoy
Six-time Olympic cycling champion on BBC One

We are guaranteed a medal of some colour at least, but it was perfect from both of them. Jason looked like he had a different gear and Callum went from the front and it was perfect. 

Skinner and Kenny, by the way, cannot meet in the last four. If they both win their semis, we will be guaranteed a British one-two.

Kate Evans: Jason Kenny looks completely unbeatable. Astounding.

Dominic Smith: Such power by Team GB riders in the individual sprint

Skinner was in the showers by the time Xu Chao crossed the finish line. Both Britons through to the semis, which come at about 21:40 this evening.

Skinner is one up on on China's Xu Chao. Big gap at the bell..

Chris Boardman
Olympic cycling champion on BBC TV

It was frightening form from Jason. A moment of acceleration, he got himself into control and could then ease off. 

Kenny looking untouchable here. Burners on at the bell, 2-0 win sealed. Semi-finals await. Callum Skinner next...

Right then, Mike Henson has seen Becky James to the Keirin final, Stephan Shemilt here to see if Jason Kenny can reach the sprint semi-finals. Second race against Australian Patrick Constable... 

Aimee Lewis
BBC Sport in Rio

What a match this is for a place in the men's singles Olympic final. Rafael Nadal repeatedly punched the air as he held his serve. Decibels rising inside Centre Court, so is the tension too. 

Both sets of fans backing their men. On serve in the decider. What a way to spend a Saturday, 

Image source, .

Some more quotes from the British men's team pursuit quartet, who won gold yesterday.

Ed Clancy told BBC One of the importance of Sir Bradley Wiggins to the quartet. He said: "Since he has been a part of the team he has helped it evolve and it needed a person like him to inspire us."

Owain Doull: "It is pretty surreal, I can't even remember finishing the race. It wasn't until we crossed the line we realised we had won. It was the scrappiest thing ever."

The British men's team pursuit quartet, who won gold yesterday, have been talking on BBC One.

Steven Burke said: "The celebrations went long into the night. It was just a fantastic moment, and I'm really proud of the lads. It was an epic final, a brutal final and we were playing catch-up but we managed to bring it together in the closing laps."

Sir Bradley Wiggins added: "It doesn't feel any different to yesterday and it still hasn't sunk in. This is the last time we will ride as a quartet and there will be a different line-up in Tokyo, with two new guys and they will have to try and win a fourth gold in a row."

Chris Boardman
Olympic cycling champion on BBC TV

Becky James eased on the line but it was a beautifully-timed move to go into the lead.

She accelerated in the bend so she would be coming at them when she got into the straight. It was a subtle, but important time to accelerate.

Becky James went hard and went early, accelerating over the top of the last-but-two bend and splitting the pack.

Anna Meares came with her and took the race as the pair eased up before the line. Liubov Basova of the Ukraine joins them in the final.

There is a slight delay to the start of the second second-round race as the track is cleaned following a little spill in the first.

Great Britain's Becky James needs a top-three finish to book her place in tonight's final at 21:27 BST.

She checks her chin strap, the derny is let loose and we are go...

Germany's Kristina Vogel - the current world champion - is safely through to the final along with Elis Ligtlee of the Netherland and Anastasia Voinova of Russia.

Now for Becky James to take to the pine...

Sweden's newly crowned Open champion Henrik Stenson has just missed a birdie putt at the 18th, and it means that Great Britain's Justin Rose is the new leader of the men's golf tournament.

The Briton started the day four shots off the pace, but a six-under-par third round of 65 means he will be one shot clear of the field in Rio ahead of Sunday's fourth and final round.

Overnight Australian leader Marcus Fraser is third on nine under, after shooting a one-over-par round of 72.

Great Britain's Grace Reid is eighth after the first dives in the 3m springboard semi-final, having clocked up 66.00.

Usual diving rules apply. Five dives to total up, the top 12 qualify for the final.