Stan Wawrinka plays his quarterfinal match at the French Open

Stan Wawrinka of Switzerland falls on the clay during his French Open men's quarterfinal match against Roger Federer of Switzerland at Roland Garros in Paris on June 4, 2019. Federer defeated Wawrinka 7-6 (4), 4-6, 7-6 (5), 6-4 to advance to the semi-finals. Photo by David Silpa/UPI