NEW YORK, NY - SEPTEMBER 07: Victoria Azarenka of Belarus celebrates match point during her women's singles semifinal match against Maria Sharapova of Russia on Day Twelve of the 2012 US Open at USTA Billie Jean King National Tennis Center on September 7, 2012 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Cameron Spencer/Getty Images)
2012 US Open - Day 12
NEW YORK, NY - SEPTEMBER 07: Maria Sharapova of Russia reacts during her women's singles semifinal match against Victoria Azarenka of Belarus on Day Twelve of the 2012 US Open at USTA Billie Jean King National Tennis Center on September 7, 2012 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Clive Brunskill/Getty Images)
TEN-US OPEN-WILLIAMS-ERRANI
Sara Errani of Italy plays a shot against Serena Willams of the US during their 2012 US Open women's singles semifinal match at the USTA Billie Jean King National Tennis Center in New York on September 7, 2012. AFP PHOTO / TIMOTHY A. CLARY (Photo credit should read TIMOTHY A. CLARY/AFP/GettyImages)
TEN-US OPEN-WILLIAMS-ERRANI
NEW YORK, NY - SEPTEMBER 07: Serena Williams of the United States celebrates match point during her women's singles semifinal match against Sara Errani of Italy on Day Twelve of the 2012 US Open at USTA Billie Jean King National Tennis Center on September 7, 2012 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Elsa/Getty Images)
2012 US Open - Day 12
NEW YORK, NY - SEPTEMBER 07: Maria Sharapova of Russia returns a shot during her women's singles semifinal match against Victoria Azarenka of Belarus on Day Twelve of the 2012 US Open at USTA Billie Jean King National Tennis Center on September 7, 2012 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Matthew Stockman/Getty Images)
2012 US Open - Day 12
2012 US Open - Day 12
NEW YORK, NY - SEPTEMBER 07: Serena Williams of the United States reacts during her women's singles semifinal match against Sara Errani of Italy on Day Twelve of the 2012 U.S. Open at the USTA Billie Jean King National Tennis Center on September 7, 2012 in the Flushing neighborhood, of the Queens borough of New York City. (Photo by Mike Stobe/Getty Images for USTA)
2012 US Open - Day 12
NEW YORK, NY - SEPTEMBER 07: Victoria Azarenka of Belarus returns a shot during her women's singles semifinal match against Maria Sharapova of Russia on Day Twelve of the 2012 U.S. Open at the USTA Billie Jean King National Tennis Center on September 7, 2012 in the Flushing neighborhood, of the Queens borough of New York City. (Photo by Mike Stobe/Getty Images for USTA)
2012 US Open - Day 12
NEW YORK, NY - SEPTEMBER 07: Serena Williams of the United States returns a shot in the women's singles semifinal match against Sara Errani of Italy on Day Twelve of the 2012 US Open at USTA Billie Jean King National Tennis Center on September 7, 2012 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Matthew Stockman/Getty Images)
TEN-US OPEN-AZARENKA-SHARAPOVA
Belarus' Victoria Azarenka celebrates defeating Russia's Maria Sharapova 3-6, 6-2, 6-4 in the 2012 US Open women's singles semifinals at the USTA Billie Jean King National Tennis Center in New York on September 7, 2012. AFP PHOTO/Emmanuel Dunand (Photo credit should read EMMANUEL DUNAND/AFP/GettyImages)
