Christian Harrison Pictures
NEW YORK, NY - AUGUST 30: Christian Harrison of the United States returns a shot to Paul-Henri Mathieu of France during his first round Men's Singles match on Day Two of the 2016 US Open at the USTA Billie Jean King National Tennis Center on August 30, 2016 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Al Bello/Getty Images)