Vasek Pospisil of Canada serves to Samuel Groth of Australia during their first round match at the Australian Open tennis championship in Melbourne, Australia, Monday, Jan. 13, 2014. (AP Photo/Aaron Favila)

Australian Open Tennis

Vasek Pospisil of Canada serves to Samuel Groth of Australia during their first round match at the Australian Open tennis championship in Melbourne, Australia, Monday, Jan. 13, 2014. (AP Photo/Aaron Favila)

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