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Michael Cherry of the United States competes during the 4x400m mixed relay final at the 2019 IAAF World Athletics Championships in Doha, Qatar, Sept. 29, 2019. (Xinhua/Jia Yuchen)
Michael Cherry of the United States competes during the 4x400m mixed relay final at the 2019 IAAF World Athletics Championships in Doha, Qatar, Sept. 29, 2019. (Xinhua/Jia Yuchen)