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Rafael Nadal (R) of Spain serves the ball after the men's singles second round match against Matthew Ebden of Australia at the Australian Open in Melbourne, Australia, Jan. 16, 2018. (Xinhua/Bai Xuefei)
Rafael Nadal (R) of Spain serves the ball after the men's singles second round match against Matthew Ebden of Australia at the Australian Open in Melbourne, Australia, Jan. 16, 2018. (Xinhua/Bai Xuefei)