In pics: 2017 U.S. Open on day 7

Garbine Muguruza of Spain reacts during the women's singles fourth round match against Petra Kvitova of Czech Republic at the 2017 U.S. Open in New York, the United States, Sept. 3, 2017. Garbine Muguruza lost 0-2. (Xinhua/Wang Ying)