
Jo-Wilfried Tsonga of France serves during the men's singles second round match against Denis Shapovalov of Canada at the 2017 U.S. Open in New York, the United States, Aug. 30, 2017. (Xinhua/Li Muzi)

Jo-Wilfried Tsonga of France serves during the men's singles second round match against Denis Shapovalov of Canada at the 2017 U.S. Open in New York, the United States, Aug. 30, 2017. (Xinhua/Li Muzi)