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Kiara Parker of Team USA celebrates after the women's 4X100m relay final at the 2019 IAAF World Athletics Championships in Doha, Qatar, on Oct. 5, 2019. (Xinhua/Jia Yuchen)

Kiara Parker of Team USA celebrates after the women's 4X100m relay final at the 2019 IAAF World Athletics Championships in Doha, Qatar, on Oct. 5, 2019. (Xinhua/Jia Yuchen)