NEW YORK, NY - SEPTEMBER 01: John Isner of the United States reacts after defeating Malek Jaziri of Tunisia during their Men's Singles First Round match on Day Two of the 2015 US Open at the USTA Billie Jean King National Tennis Center on September 1, 2015 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Matthew Stockman/Getty Images)
