The Australian Open

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Tomas Berdych of the Czech Republic makes a backhand return to Stanislas Wawrinka of Switzerland during their semifinal at the Australian Open tennis championship in Melbourne, Australia, Thursday, Jan. 23, 2014.(AP Photo/Aaron Favila)

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Stanislas Wawrinka of Switzerland celebrates a point won against Tomas Berdych of the Czech Republic during their semifinal at the Australian Open tennis championship in Melbourne, Australia, Thursday, Jan. 23, 2014.(AP Photo/Aaron Favila)

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Stanislas Wawrinka of Switzerland makes a forehand return to Tomas Berdych of the Czech Republic during their semifinal at the Australian Open tennis championship in Melbourne, Australia, Thursday, Jan. 23, 2014.(AP Photo/Rick Rycroft)