
Usain Bolt (L) of Jamaica and Justin Gatlin of the United States look on during the awarding ceremony for Men's 100m Final on Day 3 of the 2017 IAAF World Championships in London, Britain, on Aug. 6, 2017. (Xinhua/Wang Lili)

Usain Bolt (L) of Jamaica and Justin Gatlin of the United States look on during the awarding ceremony for Men's 100m Final on Day 3 of the 2017 IAAF World Championships in London, Britain, on Aug. 6, 2017. (Xinhua/Wang Lili)