Grigor Dimitrov of Bulgaria waves to the spectators after the quarterfinal loss to Rafael Nadal of Spain at the Australian Open tennis championship in Melbourne, Australia, Wednesday, Jan. 22, 2014. (AP Photo/Rick Rycroft)

Australian Open Tennis

Grigor Dimitrov of Bulgaria waves to the spectators after the quarterfinal loss to Rafael Nadal of Spain at the Australian Open tennis championship in Melbourne, Australia, Wednesday, Jan. 22, 2014. (AP Photo/Rick Rycroft)

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