Roger Federer serves at the US Open

Roger Federer of Switzerland serves to David Goffin of Belgium in the fourth round match at the 2019 US Open Tennis Championships at the USTA Billie Jean King National Tennis Center on Sunday, September 1, 2019 in New York City. Federer won 6-2, 6-2, 6-0. Photo by Monika Graff/UPI