Alistair Brownlee retained his Olympic men's triathlon title to win Britain's 20th gold medal of the Rio Games, with brother Jonny claiming the silver.

Alistair, 28, pulled away from 26-year-old Jonny around halfway through the 10k run in sweltering conditions.

Read more: Rio Olympics 2016: Alistair Brownlee wins triathlon gold, brother Jonny second

Defending champions United States will get a second chance to make the women's Olympic 4x100m relay final.

They dropped the baton in the heats but were obstructed and must now beat the time set by eighth-fastest China when they run again at 00:00 BST.

Read more: Rio Olympics 2016: US women get reprieve after baton drop

Jamaica’s Elaine Thompson bucked the trend on a huge night for United States women athletes as she became the first woman since Florence Griffith-Joyner at Seoul in 1988 to win the sprint double at the Olympics, winning the 200 metres in 21.78sec after holding off the world champion Dafne Schippers of The Netherlands, who clocked 21.88.

Read more: Thompson repeats Flo Jo 100/200m Olympic double as Bartoletta beats Reese to gold AddThis Sharing...

International Olympic Committee (IOC) Executive Board member Patrick Hickey has been formally charged by Brazilian police today following his arrest in connection with the alleged ticketing scandal involving Ireland here at Rio 2016.

Read more: IOC Executive Board member Hickey charged by Brazilian police in connection with Irish ticketing...

Rio 2016 demonstrates why the Olympics are such a compelling environment within which brands can embed themselves and establish their own narratives.

The 2016 Olympiad in Rio has once again proved that the Games are The Greatest Show on Earth, with the greatest storylines.

Read more: Olympic tales make the best stories