File photo taken on Sept. 29, 2019 shows Christian Coleman of the United States displaying his gold medal during the awarding ceremony for the men's 100m at the 2019 IAAF World Athletics Championships in Doha, Qatar. Men's 100m world champion Christian Coleman has been banned for two years, for missing three doping control tests. Track and field's Athletics Integrity Unit said Coleman will be banned until May 2022, forcing him to miss the Tokyo Olympics next year. (Xinhua/Li Ming)
