Karolina Pliskova of Czech Republic serves during the women's singles final match against Angelique Kerber of Germany at the 2016 U.S. Open in New York, the United States, Sept. 10, 2016. Karolina Pliskova lost 1-2. (Xinhua/Qin Lang)
Karolina Pliskova of Czech Republic serves during the women's singles final match against Angelique Kerber of Germany at the 2016 U.S. Open in New York, the United States, Sept. 10, 2016. Karolina Pliskova lost 1-2. (Xinhua/Qin Lang)