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Serbia's Novak Djokovic hits a return during the men's singles second round match against France's Jeremy Chardy at the Shanghai Masters tennis tournament on Oct. 9, 2018. Novak Djokovic won 2-0. (Xinhua/Ding Ting)
Serbia's Novak Djokovic hits a return during the men's singles second round match against France's Jeremy Chardy at the Shanghai Masters tennis tournament on Oct. 9, 2018. Novak Djokovic won 2-0. (Xinhua/Ding Ting)