
Joao Sousa of Portugal reacts during the men's singles second round match against Novak Djokovic of Serbia at French Open Tennis Tournament 2017 in Roland Garros, Paris, France, on May 31, 2017. Djokovic won 3-0. (Xinhua/Han Yan)

Joao Sousa of Portugal reacts during the men's singles second round match against Novak Djokovic of Serbia at French Open Tennis Tournament 2017 in Roland Garros, Paris, France, on May 31, 2017. Djokovic won 3-0. (Xinhua/Han Yan)