Usain Bolt of Jamaica reacts prior to a men's 100m round 1 heat at the 2016 Rio Olympic Games in Rio de Janeiro, Brazil, on Aug. 13, 2016. (Xinhua/Wang Lili)
Usain Bolt of Jamaica reacts prior to a men's 100m round 1 heat at the 2016 Rio Olympic Games in Rio de Janeiro, Brazil, on Aug. 13, 2016. (Xinhua/Wang Lili)