Usain Bolt (C) of Jamaica prepares to compete during a men's 100m round 1 heat at the 2016 Rio Olympic Games in Rio de Janeiro, Brazil, on Aug. 13, 2016. (Xinhua/Li Ming)
Usain Bolt (C) of Jamaica prepares to compete during a men's 100m round 1 heat at the 2016 Rio Olympic Games in Rio de Janeiro, Brazil, on Aug. 13, 2016. (Xinhua/Li Ming)