![(SP)BRITAIN-LONDON-ATHLETICS-IAAF-WORLD CHAMPIONSHIPS-DAY 10](136523163_15027101753641n.jpg)
Usain Bolt (R) of Jamaica claps with a boy on Day 10 of the 2017 IAAF World Championships at London Stadium in London, Britain, on Aug. 13, 2017. (Xinhua/Han Yan)
Usain Bolt (R) of Jamaica claps with a boy on Day 10 of the 2017 IAAF World Championships at London Stadium in London, Britain, on Aug. 13, 2017. (Xinhua/Han Yan)