Vasek Pospisil of Canada makes a backhand return 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 makes a backhand return 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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