
Stan Wawrinka of Switzerland returns the ball during the men's singles semifinal against Andy Murray of Britain at the French Open Tennis Tournament 2017 in Paris, France on June 9, 2017. Stan Wawrinka won 3-2. (Xinhua/Chen Yichen)

Stan Wawrinka of Switzerland returns the ball during the men's singles semifinal against Andy Murray of Britain at the French Open Tennis Tournament 2017 in Paris, France on June 9, 2017. Stan Wawrinka won 3-2. (Xinhua/Chen Yichen)