
Marin Cilic (L) of Croatia and Konstantin Kravchuk of Russia are seen during the men's singles 2nd round match at the French Open Tennis Tournament 2017 in Paris, France, on June 1, 2017. (Xinhua/Chen Yichen)

Marin Cilic (L) of Croatia and Konstantin Kravchuk of Russia are seen during the men's singles 2nd round match at the French Open Tennis Tournament 2017 in Paris, France, on June 1, 2017. (Xinhua/Chen Yichen)