Carlos Berlocq Pictures
NEW YORK, NY - AUGUST 29: Carlos Berlocq of Argentina serves during his men's singles second round match against Roger Federer of Switzerland on Day Four of the 2013 US Open at USTA Billie Jean King National Tennis Center on August 29, 2013 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Clive Brunskill/Getty Images)