
Andrey Kuznetsov of Russia returns the ball during the men's semifinal against Stanislas Wawrinka of Switzerland at the Geneva Open ATP 250 Tennis tournament in Geneva, Switzerland, May 26, 2017. Wawrinka won 2-0. (Xinhua/Alain Grosclaude)

Andrey Kuznetsov of Russia returns the ball during the men's semifinal against Stanislas Wawrinka of Switzerland at the Geneva Open ATP 250 Tennis tournament in Geneva, Switzerland, May 26, 2017. Wawrinka won 2-0. (Xinhua/Alain Grosclaude)