French Open: Federer, Nadal sweep into quarters, Wawrinka wins epic over Tsitsipas

Rafael Nadal of Spain reacts during the men's singles fourth round match with Juan Ignacio Londero of Argentina at French Open tennis tournament 2019 at Roland Garros in Paris, France on June 2, 2019. Rafael Nadal won 3-0. (Xinhua/Han Yan)