NEW YORK, NY - SEPTEMBER 02: John Isner of the United States walks off the court after being defeated by Kyle Edmund of Great Britain during his third round Men's Singles match on Day Five of the 2016 US Open at the USTA Billie Jean King National Tennis Center on September 2, 2016 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Alex Goodlett/Getty Images)
