The 2011 US Open was a tennis tournament played on the outdoor hard courts at the Billie Jean King National Tennis Center in Flushing Meadows Park, of Queens, New York City, United States. It began on August 29 and was originally scheduled to end on September 11, but the men's final was postponed to September 12 due to rain. US Open 2011: August 29 – September 12, 2011 at USTA Billie Jean King National Tennis Center. Men's singles: Novak Djokovic — 4th major title. Women's singles: Samantha Stosur. Wiki link