Grigor Dimitrov of Bulgaria celebrates after his win over Milos Raonic of Canada during their third round match at the Australian Open tennis championship in Melbourne, Australia, Saturday, Jan. 18, 2014.(AP Photo/Andrew Brownbill)

Australian Open Tennis

Grigor Dimitrov of Bulgaria celebrates after his win over Milos Raonic of Canada during their third round match at the Australian Open tennis championship in Melbourne, Australia, Saturday, Jan. 18, 2014.(AP Photo/Andrew Brownbill)

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