Philipp Kohlschreiber Pictures

  • NEW YORK, NY - AUGUST 31: Philipp Kohlschreiber of Germany serves during his men's singles third round match against John Isner of United States of America on Day Six of the 2013 US Open at USTA Billie Jean King National Tennis Center on August 31, 2013 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Elsa/Getty Images)