
Gael Monfils of France returns the ball during the men's singles round of 16 match with Stan Wawrinka of Switzerland at French Open Tennis Tournament 2017 in Roland Garros, Paris, France on June 5, 2017. Monfils lost 0-3. (Xinhua/Han Yan)

Gael Monfils of France returns the ball during the men's singles round of 16 match with Stan Wawrinka of Switzerland at French Open Tennis Tournament 2017 in Roland Garros, Paris, France on June 5, 2017. Monfils lost 0-3. (Xinhua/Han Yan)