16 GOLDS AT STAKE
Men's decathlon (final event tomorrow, 8.31am), 200m final (tomorrow, 9.30am) America's Ashton Eaton is aiming to be the first to retain the decathlon gold since Britain's Daley Thompson did it in 1984. But all eyes will be on the 200m final, as Usain Bolt goes for his third straight gold in the event.
Women's singles semi-finals (from 7.30pm)
Spain's world No. 1 Carolina Marin faces a tough battle with China's defending champion Li Xuerui, while Japan's Nozomi Okuhara faces India's P.V. Sindhu.
Men's race (10pm)
British brothers Alistair and Jonathan Campbell are the favourites to win this gruelling, three-discipline event at Fort Copacabana.
Congratulations @MichaelPhelps on a total of 28 career Olympic medals. I'm still working at 93, so I think retiring at 31 is a bit soon!
United States Senator
The gold medals keep coming for #TeamGB @JasonKenny107
Former Manchester United footballer cheers his compatriot, cyclist Jason Kenny, on winning the men's keirin gold, Britain's 19th of the Games.
When fellow athletes from another sport is doing the country proud and you are as excited as you cheer for them. 100% you will be very happy.
Malaysia's diving silver medallist is thrilled that compatriot cyclist Azizul Awang won bronze in the men's keirin.