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MELBOURNE, AUSTRALIA - JANUARY 25: Victoria Azarenka of Belarus serves in her fourth round match against Barbora Strycova of the Czech Republic during day eight of the 2016 Australian Open at Melbourne Park on January 25, 2016 in Melbourne, Australia. (Photo by Michael Dodge/Getty Images)

MELBOURNE, AUSTRALIA - JANUARY 25:  Victoria Azarenka of Belarus serves in her fourth round match against Barbora Strycova of the Czech Republic during day eight of the 2016 Australian Open at Melbourne Park on January 25, 2016 in Melbourne, Australia.  (Photo by Michael Dodge/Getty Images)