
Lucie Safarova of the Czech Republic reacts during the women's singles fourth round match against CoCo Vandeweghe of the United States at the 2017 U.S. Open in New York, the United States, Sept. 4, 2017. Lucie Safarova lost 0-2. (Xinhua/Qin Lang)

Lucie Safarova of the Czech Republic reacts during the women's singles fourth round match against CoCo Vandeweghe of the United States at the 2017 U.S. Open in New York, the United States, Sept. 4, 2017. Lucie Safarova lost 0-2. (Xinhua/Qin Lang)