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Roger Federer of Switzerland celebrates during the men's singles third round match against John Millman of Australia at the 2020 Australian Open tennis tournament in Melbourne, Australia, Jan. 24, 2020. (Xinhua/Zhu Hongye)
Roger Federer of Switzerland celebrates during the men's singles third round match against John Millman of Australia at the 2020 Australian Open tennis tournament in Melbourne, Australia, Jan. 24, 2020. (Xinhua/Zhu Hongye)