
Mischa Zverev of Germany serves during the men's final against Stanislas Wawrinka of Switzerland at the Geneva Open ATP 250 Tennis tournament in Geneva, Switzerland, May 27, 2017. Wawrinka claimed the title with 2-1. (Xinhua/Alain Grosclaude)

Mischa Zverev of Germany serves during the men's final against Stanislas Wawrinka of Switzerland at the Geneva Open ATP 250 Tennis tournament in Geneva, Switzerland, May 27, 2017. Wawrinka claimed the title with 2-1. (Xinhua/Alain Grosclaude)