Roger Federer of Switzerland kisses his trophy during the awarding ceremony for the men's singles event at the Australian Open tennis championships in Melbourne, Australia, Jan. 29, 2017. (Xinhua/Lui Siu Wai)
Roger Federer of Switzerland kisses his trophy during the awarding ceremony for the men's singles event at the Australian Open tennis championships in Melbourne, Australia, Jan. 29, 2017. (Xinhua/Lui Siu Wai)
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