NEW YORK, NY - SEPTEMBER 02:  Rafael Nadal of Spain's girlfriend, Xisca Perello, attends his men's singles fourth round match against Philipp Kohlschreiber of Germany on Day Eight of the 2013 US Open at USTA Billie Jean King National Tennis Center on September 2, 2013 in the Flushing neighborhood of the Queens borough of New York City.  (Photo by Matthew Stockman/Getty Images)