Stan Wawrinka of Switzerland hits a return to Daniel Evans of Britain during a men's singles third round match at the 2016 U.S. Open tennis tournament in New York, the United States, Sept. 3, 2016. Wawrinka won 3-2. (Xinhua/Bao Dandan)
Stan Wawrinka of Switzerland hits a return to Daniel Evans of Britain during a men's singles third round match at the 2016 U.S. Open tennis tournament in New York, the United States, Sept. 3, 2016. Wawrinka won 3-2. (Xinhua/Bao Dandan)