Mischa Zverev Pictures

  • NEW YORK, NY - SEPTEMBER 01: Mischa Zverev of Germany returns a shot to John Isner of the United States during their third round match on Day Five of the 2017 US Open at the USTA Billie Jean King National Tennis Center on September 1, 2017 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Abbie Parr/Getty Images)