Angelique Kerber of Germany serves the ball during the women's singles first-round match against Lesia Tsurenko of Ukraine at the Australian Open Tennis Championships in Melbourne, Australia, Jan. 16, 2017. Kerber won 2-1. (Xinhua/Bai Xue)
Angelique Kerber of Germany serves the ball during the women's singles first-round match against Lesia Tsurenko of Ukraine at the Australian Open Tennis Championships in Melbourne, Australia, Jan. 16, 2017. Kerber won 2-1. (Xinhua/Bai Xue)