
Rafael Nadal of Spain celebrates during the men's singles semifinal match against Juan Martin del Potro of Argentinaat the 2017 U.S. Open in New York, the United States, Sept. 8, 2017. Rafael Nadal won 3-1 to enter the final. (Xinhua/Wang Ying)

Rafael Nadal of Spain celebrates during the men's singles semifinal match against Juan Martin del Potro of Argentinaat the 2017 U.S. Open in New York, the United States, Sept. 8, 2017. Rafael Nadal won 3-1 to enter the final. (Xinhua/Wang Ying)