
Lucas Pouille of France returns a ball to Diego Schwartzman of Argentina during the men's singles fouth round match at the 2017 U.S. Open in New York, the United States, Sept. 3, 2017. Lucas Pouille lost 1-3. (Xinhua/Qin Lang)

Lucas Pouille of France returns a ball to Diego Schwartzman of Argentina during the men's singles fouth round match at the 2017 U.S. Open in New York, the United States, Sept. 3, 2017. Lucas Pouille lost 1-3. (Xinhua/Qin Lang)