NEW YORK, NY - SEPTEMBER 10: Fireworks are seen over Arthur Ashe stadium prior to the start of the women's semifinal match during Day Thirteen of the 2011 U.S. Open at the USTA Billie Jean King National Tennis Center on September 10, 2011 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Jaime L. Mikle/Getty Images for USTA)