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NEW YORK, NY - SEPTEMBER 07: A general view is seen as Serena Williams of the United States plays against Caroline Wozniacki of Denmark during their women's singles final match on Day Fourteen of the 2014 US Open at the USTA Billie Jean King National Tennis Center on September 7, 2014 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Chris Trotman/Getty Images for USTA)

NEW YORK, NY - SEPTEMBER 07:  A general view is seen as Serena Williams of the United States plays against Caroline Wozniacki of Denmark during their women's singles final match on Day Fourteen of the 2014 US Open at the USTA Billie Jean King National Tennis Center on September 7, 2014 in the Flushing neighborhood of the Queens borough of New York City.  (Photo by Chris Trotman/Getty Images for USTA)