Ana Ivanovic of Serbia appeals a point during her third round match against Samantha Stosur of Australia  at the Australian Open tennis championship in Melbourne, Australia, Friday, Jan. 17, 2014.(AP Photo/Andrew Brownbill)

Australian Open Tennis

Ana Ivanovic of Serbia appeals a point during her third round match against Samantha Stosur of Australia at the Australian Open tennis championship in Melbourne, Australia, Friday, Jan. 17, 2014.(AP Photo/Andrew Brownbill)

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