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Shamier Little of the US (L) and Zuzana Hejnova of the Czek Republic compete during the women's 400m hurdles at the 2019 IAAF Diamond League in Lausanne, Switzerland July 5, 2019. (Photo by Ruben Sprich/Xinhua)
Shamier Little of the US (L) and Zuzana Hejnova of the Czek Republic compete during the women's 400m hurdles at the 2019 IAAF Diamond League in Lausanne, Switzerland July 5, 2019. (Photo by Ruben Sprich/Xinhua)