Spain's Rafael Nadal returns the ball during the men's singles quarterfinal match against Canada's Milos Raonic at the Australian Open tennis championships in Melbourne, Australia, Jan. 25, 2017. (Xinhua/Lui Siu Wai)
Spain's Rafael Nadal returns the ball during the men's singles quarterfinal match against Canada's Milos Raonic at the Australian Open tennis championships in Melbourne, Australia, Jan. 25, 2017. (Xinhua/Lui Siu Wai)