Germany's Andrea Petkovic (L) shakes hands with Russia's Maria Sharapova after their fourth round match at the Australian Open tennis tournament in Melbourne, Australia, 24 January 2011.
Russia's Maria Sharapova returns to Germany's Andrea Petkovic during their fourth round match at the Australian Open tennis tournament in Melbourne, Australia, 24 January 2011.
Russia's Maria Sharapova reacts to losing a point to Germany's Andrea Petkovic during their fourth round match at the Australian Open tennis tournament in Melbourne, Australia, 24 January 2011.
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