NEW YORK, NY - AUGUST 31: Sam Groth of Australia returns a shot against Alexandr Dolgopolov of Ukraine during their Men's Singles First Round match on Day One of the 2015 US Open at the USTA Billie Jean King National Tennis Center on August 31, 2015 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Matthew Stockman/Getty Images)
