Justin Gatlin of the United States reacts after Men's 100m final of the 2017 IAAF World Championships at London Stadium in London, Britain, on Aug. 5, 2017. 2005 world champion Justin Gatlin staged by far the biggest surprise of the London world championships as he edged defending champion Usain Bolt to take the world title here on Saturday. Gatlin became the most subdued world champion when he came back from behind to win in 9.92 seconds. (Xinhua/Luo huanhuan)
