Florian Mayer of Germany hits the ball during the men's singles first round match against Rafael Nadal of Spain at the Australian Open Tennis Championships in Melbourne, Australia, Jan. 17, 2017. Mayer lost 0-3. (Xinhua/Lui Siu Wai)
Florian Mayer of Germany hits the ball during the men's singles first round match against Rafael Nadal of Spain at the Australian Open Tennis Championships in Melbourne, Australia, Jan. 17, 2017. Mayer lost 0-3. (Xinhua/Lui Siu Wai)