NEW YORK, NY - AUGUST 30:  Nicole Gibbs of the United States returns a shot against Flavia Pennetta of Italy during her women's singles third round match on Day Six of the 2014 US Open at the USTA Billie Jean King National Tennis Center on August 30, 2014 in the Flushing neighborhood of the Queens borough of New York City.  (Photo by Streeter Lecka/Getty Images)