
Stan Wawrinka of Switzerland returns the ball during the men's singles final with Rafael Nadal of Spain at French Open tennis tournament 2017 at Roland Garros, in Paris, France on June 11, 2017. Nadal won 3-0 to claim the title. (Xinhua/Chen Yichen)

Stan Wawrinka of Switzerland returns the ball during the men's singles final with Rafael Nadal of Spain at French Open tennis tournament 2017 at Roland Garros, in Paris, France on June 11, 2017. Nadal won 3-0 to claim the title. (Xinhua/Chen Yichen)