MELBOURNE, AUSTRALIA - JANUARY 21: Casey Dellacqua of Australia bites her racquet in her third round doubles match with Ashleigh Barty of Australia against Natalie Grandin of South Africa and Vladimira Uhlirova of the Czech Republic during day eight of the 2013 Australian Open at Melbourne Park on January 21, 2013 in Melbourne, Australia. (Photo by Michael Dodge/Getty Images)
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