Usain Bolt will have to hand back one of his nine Olympic gold medals after Jamaican team-mate Nesta Carter tested positive for a banned substance. Carter was part of the Jamaican quartet that won the 4x100m in Beijing in 2008. He won gold in the 100m, 200m and 4x100m relay to add to his successes in the same events in 2008 and 2012. He ran the first leg for Jamaica's 4x100m relay team in Beijing, which also included Michael Frater, Asafa Powell and Bolt. Carter and the Jamaican National Olympic Committee were told of the adverse finding in May - before the Rio Games - and told his B sample would be tested.

Source: The Star January 25, 2017 15:27 UTC