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DOHA, QATAR - MARCH 08: Reilly Opelka of United States plays a backhand during his round of 32 singles match against Roberto Bautista Agut of Spain during Day One of the Qatar ExxonMobil Open 2021 at Khalifa International Tennis and Squash Complex on March 08, 2021 in Doha, Qatar. (Photo by Mohamed Farag/Getty Images)

DOHA, QATAR - MARCH 08: Reilly Opelka of United States plays a backhand  during his round of 32 singles match against Roberto Bautista Agut of Spain during Day One of the Qatar ExxonMobil Open 2021 at Khalifa International Tennis and Squash Complex on March 08, 2021 in Doha, Qatar. (Photo by Mohamed Farag/Getty Images)