Usain Bolt wins 100m gold in 9.81 seconds for his seventh Olympic title
Van Niekerk breaks Johnson's 400m world record to win gold in 43.03
Great Britain on 15 golds after winning five on Sunday
Murray retains his tennis title; Rose wins golf gold
Cycling: GB's Kenny wins sprint gold and his fifth gold in all
Whitlock wins GB's first gymnastics golds
Silvers for Dempsey (windsurfing), Smith (gymnastics) and Skinner (cycling)
#bbcrio2016
Alison Kiddle: Fantastic from Kenny, what a ride! Tactics, strength, speed, GOLD!
Sam Holloway: Five golds for Jason Kenny. What comes above knighthood?
Matt C: Five #gold medals for @JasonKenny107!! One of @TeamGB's low profile stars, but undoubtedly a superstar.
Men's sprint
That's a nice moment. A hug between the victor and the vanquished before a pose with the Union flag. Great Britain rules the Olympic sprint again.
Jason Kenny wins men's sprint gold
Chris Boardman
Olympic cycling champion on BBC TV
Callum Skinner tried everything, he rode tactically very well in that second race but could not do anything about it.
We have seen Jason Kenny in incredible form and he has not finished yet - he still has the keirin to come.
Men's sprint
Kenny greets his family with a big hug, then climbs on to the barrier with a Union flag in his hands. Skinner, the silver medalist is getting congratulations from the GB staff.
Men's sprint
Victoria Pendleton
Olympic cycling gold medalist
I thought Callum did an excellent job, playing to a great gameplan but in end Jason Kenny just overpowered it. He was in control.
Men's sprint
It's gold medal number five for Jason Kenny! He's beaten Callum Skinner in the sprint final and defends the Olympic title he won four years ago.
Sir Chris Hoy has six. Sir Bradley Wiggins, Sir Steve Redgrave and now Jason Kenny have five. GB's list of Olympic royalty adds a new name.
Men's sprint
Kenny moves...
Men's sprint
Movement from Skinner, up and down. Kenny tries to move ahead. The bell...
Men's sprint
Getting quicker. Climb the banking...
Men's sprint
Victoria Pendleton
Olympic cycling gold medalist
Callum needs to be patient, judge a gap and run into Jason's slipstream.
Men's sprint
Slowly. No early attack by Skinner. Kenny turns over his right shoulder.
Men's sprint
Britons back in position. Kenny to lead out this time.
Men's sprint
Denis Dmitriev win's bronze in the sprint, meaning the stage is set for Kenny and Skinner.
Kenny, remember, already has four Olympic golds to his name. Only Wiggins, Redgrave and Hoy have won five or more for Great Britain.
Men's final: Murray 4-3 Del Potro
Hmmmm. Has Juan Martin del Potro being playing possum here? Break back. Back on serve.
Men's singles final: Murray 4-2 Del Potro
Luke Reddy
BBC Sport in Rio
Andy Murray stands six to eight feet behind the baseline for every Juan Martin del Potro serve and when the ball is tossed into the air, takes two big strides forward. For second serves his toes are on the baseline. Either way he's aggressive.
No doubting he's the dictator out there and has control. The two games Del Potro has won have resulted in a chorus of singing in the stands, so Murray will be keen to constantly disrupt any momentum his opponent seeks to build.
The stadium remains relatively timid in atmosphere but there's scope for it to bubble if Del Potro turns the flames up.
Image source, Getty Images
Mary Pierce
Former French Open champion on BBC Radio 5 live
Del Potro is looking out of gas already early on here.
He has to dig deep. It might be the only time in his life he is this position.
Men's final: Murray 4-2 Del Potro
Definitely not running on time in the velodrome. It means I have time to tell you that Juan Martin del Potro is desperately clinging to his serve like a man on the edge. Flagging.
Men's sprint
The second race of the men's sprint final is listed at 21:42, but I'm not sure we're running on time. Watch this space...