Nadal, Federer reach men's singles third round, Bertens out of French Open

Zhang Shuai of China and John Peers (Back) of Australia compete during the mixed doubles first round match with Margot Yerolymos and Gregoire Barrere of France at French Open tennis tournament 2019 at Roland Garros, in Paris, France on May 29, 2019. (Xinhua/Han Yan)