South African Wayde van Niekerk broke a 17-year world record to win 400m gold in 43.03 seconds.
Van Niekerk’s 400m time was 0.15 seconds quicker than the previous world record set by Michael Johnson in Seville in 1999.
In tennis, Great Britain’s Wimbledon champion Andy Murray retained his Olympic title with an epic win over Argentina’s Juan Martin del Potro in the men’s singles final.
