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Rushell Clayton of Jamaica celebrates after the women's 400m hurdles final at the 2019 IAAF World Athletics Championships in Doha, Qatar, Oct. 4, 2019. (Xinhua/Jia Yuchen)

Rushell Clayton of Jamaica celebrates after the women's 400m hurdles final at the 2019 IAAF World Athletics Championships in Doha, Qatar, Oct. 4, 2019. (Xinhua/Jia Yuchen)