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Diego Schwartzman of Argentina serves during the men's singles 3rd round match against Tomas Berdych of the Czech Republic at the Australian Open in Melbourne, Australia, Jan. 18, 2019. (Xinhua/Bai Xuefei)
Diego Schwartzman of Argentina serves during the men's singles 3rd round match against Tomas Berdych of the Czech Republic at the Australian Open in Melbourne, Australia, Jan. 18, 2019. (Xinhua/Bai Xuefei)