NEW YORK, NY - AUGUST 29:  Rafael Nadal of Spain celebrates victory in his men's singles second round match against Rogerio Dutra Silva of Brazil 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)