Serena Williams reacts after beating Victoria Azarenka, of Belarus, in the championship match at the 2012 US Open tennis tournament, Sunday, Sept. 9, 2012, in New York. (AP Photo/Mike Groll)

Photo by: Mike Groll

Serena Williams reacts after beating Victoria Azarenka, of Belarus, in the championship match at the 2012 US Open tennis tournament, Sunday, Sept. 9, 2012, in New York. (AP Photo/Mike Groll)