Ten days of athletics competition at the Rio Olympics begin on Friday. Check out the 10 events not to miss at the Olympic Stadium.
LaShawn Merritt ran a blistering anchor leg to return the men's 4x400m title to the United States, and win his third Olympic gold medal, in the final athletics event of the Rio Games on Saturday.
Tyson Gay overcame Olympic bronze medallist Justin Gatlin's quicker start and sped to the year's fastest 100 metres, clocking 9.75 seconds at the US trials for the World championships on Friday.
Check out the gold medallists on Day 15 of the 2016 Olympic Games in Rio de Janeiro, on Saturday: