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Leonardo Mayer of Argentina serves the ball during the men's singles second round match against Rafael Nadal of Spain at Australian Open 2018 in Melbourne, Australia, Jan. 17, 2018. Nadal won 3-0. (Xinhua/Bai Xuefei)
Leonardo Mayer of Argentina serves the ball during the men's singles second round match against Rafael Nadal of Spain at Australian Open 2018 in Melbourne, Australia, Jan. 17, 2018. Nadal won 3-0. (Xinhua/Bai Xuefei)