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