Florian Mayer Pictures

  • NEW YORK, NY - SEPTEMBER 02: Leonardo Mayer of Argentina returns a shot during his third round match against Rafael Nadal of Spain on Day Six of the 2017 US Open at the USTA Billie Jean King National Tennis Center on September 2, 2017 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Clive Brunskill/Getty Images)