Serbia's Novak Djokovic reacts during his semifinal match against Spain's David Ferrer at the Australian Open tennis championship in Melbourne, Australia, Thursday, Jan. 24, 2013. (AP Photo/Andrew ... more 
Serbia's Novak Djokovic reacts during his semifinal match against Spain's David Ferrer at the Australian Open tennis championship in Melbourne, Australia, Thursday, Jan. 24, 2013. (AP Photo/Andrew Brownbill) less 
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Associated Press | Photo By Andrew Brownbill
Thu, Jan 24, 2013 5:20 AM EST