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Victoria Azarenka explains her decision to pull out of the semifinals of the Brisbane International tournament, where she was due to face Serena Williams, due to a toe infection. WILLIAM WEST/AFP/Getty Images
Williams, who beat the world No. 1 in the final of September's U.S. Open, hits balls into the crowd at Pat Rafter Arena after Azarenka announced her withdrawal. Chris Hyde/Getty Images
The American will play Russia's world No. 36 Anastasia Pavlyuchenkova, who defeated 116th-ranked Ukrainian Lesia Tsurenko to reach her fifth WTA Tour final. WILLIAM WEST/AFP/Getty Images
Men's No. 1 Novak Djokovic, left, and Serbian playing partner Ana Ivanovic won through to the final of the Hopman Cup teams event in Perth, where they will play Spain's Fernando Verdasco and Anabel Medina Garrigues. Will Russell/Getty Images
