NEW YORK, NY - SEPTEMBER 11: Roberta Vinci of Italy celebrates after winning her second set against Serena Williams of the United States during their Women's Singles Semifinals match on Day Twelve of the 2015 US Open at the USTA Billie Jean King National Tennis Center on September 11, 2015 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Matthew Stockman/Getty Images)
