Dominic Thiem of Austria hits the ball during the men's singles first round match against Jan-Lennard Struff of Germany at the Australian Open Tennis Championships in Melbourne, Australia, Jan. 17, 2017. Thiem won 3-1. (Xinhua/Bai Xue)
Dominic Thiem of Austria hits the ball during the men's singles first round match against Jan-Lennard Struff of Germany at the Australian Open Tennis Championships in Melbourne, Australia, Jan. 17, 2017. Thiem won 3-1. (Xinhua/Bai Xue)