Great Britain's Giles Scott, who is guaranteed a sailing gold medal in the Finn class, has been talking to BBC One.

He said: "It is an amazingly special moment. We've had such amazing history in the Finn since 2000 with Iain Percy winning and then Ben Ainslie so to put my name alongside theirs is a very special feeling.

"I'm not sure my life will change forever, I hope it won't, but the Olympic Games has been such a huge part of my life since I was a teenager. It has been 10 years of solid work to get to this and I'm proud to have put it together.

"Going through and delivering is not as simple as people think, it is hard work and stressful but if you do manage it, it is incredible."

Del Potro bites back at the earliest opportunity in the second set. It's a grueller, both men blowing hard in the Rio night. Eventually, DelPo seals it with a backhand down the line. Argentine fans in the crowd go slightly bonker.   

Jason Kenny, who has just won the men's sprint title for his fifth Olympic gold medal, tells BBC One: "It is special, really special. I'm really grateful, everyone works so hard for us. When we win it feels like the team is winning and we have everyone behind us, pushing us.

"My confidence was knocked with that loss to Denis Dmitriev in the semi-final, but it woke me up a bit for the final."

Silver medallist Callum Skinner adds: "The whole journey has been incredible. I got beaten by the world champion and he had the tactics and the legs. The main focus has been the team sprint, so to come away with anything else was a bonus."

Luke Reddy
BBC Sport in Rio

Image source, .

My BBC Sport app is telling me Great Britain is second in the medal table? I'm trying to wave to Andy Murray to inform our flag bearer that it's very much on with China but he's a bit busy.

It's full in here now and took about 10 games to get packed. Silence during points is pierced only by a few camera clicks. The night sky makes the tennis dance floor ever sweeter on the eye. Murray's groans never sound comfortable but that aside, this place now feels pretty cool.

Lovely backhand up the line to take the set, fist pump. Can you feel it China? Can you feel it?

Mary Pierce
Former French Open champion on BBC Radio 5 live

Too good. 

Del Potro is very disappointed but there is not much that he can do.

He played well but Andy played so much better. He is reading the game and is there on top of the ball playing great shots.

Oh yes. Andy Murray seals the first set after a breathless rally that covers every inch of the court. Corner to corner, Murray eventually sweeping a backhand past the Argentine to go one up after a whopping 74 minutes. 

Now then. DelPo long. Set point Murray...

Did you not tell each other that you'd been tweeting, or did you find out by looking at Twitter?

Andy Murray is made to work hard for a crucial hold, slicing and dicing to eventually ensure that Del Potro must serve to stay in the first set. Trademark fist pump follows.

David Lamb: Is @JasonKenny107 the most low-key response to winning a 5th Gold medal ever?

Ken Morley: Arise Sir Jason Kenny.

Tom Cray: Who agrees a knighthood for @JasonKenny107?

We're going deep in the first set of this men's final. Lights beam down on to the green court where figures in white and sky blue do their dance. I sense we're in for the long haul.

And there still could be more to come from Jason Kenny. He's still to ride in the keirin. It could be three golds in these Rio Games and six in total. Only Chris Hoy has sailed in those waters.

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

For me, Callum Skinner has been the rider of the Games. To come from relative obscurity and to win a gold in the team sprint and to win a silver here, you can't underestimate how good an achievement that is.

A GB one and two is amazing. Jason had so much in the tank, phenomenal power. 

The confirmation of that GB gold lifts the team back to second in the medal table, restoring the position they held earlier after China had the temerity to win a 14th gold of their own.

Someone call China and tell them it's on.