Actor Leonardo DiCaprio is on the phone as he watches Novak Djokovic, of Serbia, play Stan Wawrinka, of Switzerland, during their men's championship match in Arthur Ashe Stadium at the 2016 US Open Tennis Championships at the USTA Billie Jean King National Tennis Center in New York City on September 11, 2016. Wawrinka won 6-7, 6-4, 7-5, 6-3. Photo by Ray Stubblebine/UPI