Usain Bolt claimed a record third 100m title while tennis player Andy Murray won Britain's fifth Rio gold medal on GB's best day at an overseas Olympics. A 15th gold of the Games, putting GB second in the table, followed gymnast Max Whitlock's historic double win and Justin Rose's golf victory.
Cyclist Jason Kenny defeated team-mate Callum Skinner for his fifth title. Bolt, 29, ran 9.81 seconds to beat Justin Gatlin to gold and follow up his titles at Beijing 2008 and London 2012. The Jamaican remains on course for the sprint 'treble treble', with the 200m and the 4x100m relay to come. "I expected to go faster, but I'm happy I won," he said. "I did what I had to." South African Wayde van Niekerk broke Michael Johnson's 17-year-old world record by 0.15secs to win 400m gold in 43.03. The mark stood for 6,198 days. Wimbledon champion Murray, 29, retained his Olympic title with an epic four-set win over Argentina's Juan Martin del Potro.