Roger Federer of Switzerland reacts after the men's singles semifinal match against his compatriot Stan Wawrinka at the Australian Open tennis championships in Melbourne, Australia, Jan. 26, 2017. Roger Federer won 3-2. (Xinhua/Zhu Hongye)
Roger Federer of Switzerland reacts after the men's singles semifinal match against his compatriot Stan Wawrinka at the Australian Open tennis championships in Melbourne, Australia, Jan. 26, 2017. Roger Federer won 3-2. (Xinhua/Zhu Hongye)