Federer, Nadal set up blockbuster clash in French Open semis

Roger Federer of Switzerland competes during the men's singles quarterfinal match against his compatriot Stan Wawrinka at French Open tennis tournament 2019 at Roland Garros, in Paris, France on June 4, 2019. Roger Federer won 3-1 and advanced to semifinal. (Xinhua/Han Yan)?