Mona Barthel of Germany waits to receive serve during her third round match against Flavia Pennetta of Italy at the Australian Open tennis championship in Melbourne, Australia, Friday, Jan. 17, 2014.(AP Photo/Eugene Hoshiko)

Australian Open Tennis

Mona Barthel of Germany waits to receive serve during her third round match against Flavia Pennetta of Italy at the Australian Open tennis championship in Melbourne, Australia, Friday, Jan. 17, 2014.(AP Photo/Eugene Hoshiko)

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