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. The 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 on Saturday. Gatlin became the most subdued world champion when he came back from behind to win in 9.92 seconds. [Photo/Xinhua]
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