Rafael Nadal of Spain reacts during the men's singles final match against Roger Federer of Switzerland at the Australian Open tennis championships in Melbourne, Australia, Jan. 29, 2017. (Xinhua/Bai Xue)
Rafael Nadal of Spain reacts during the men's singles final match against Roger Federer of Switzerland at the Australian Open tennis championships in Melbourne, Australia, Jan. 29, 2017. (Xinhua/Bai Xue)