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Britain's Andy Murray hits a forehand return to Switzerland's Roger Federer during their men's semifinal at the Australian Open tennis championship in Melbourne, Australia, Friday, Jan. 25, 2013. (AP Photo/Rob Griffith)
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Switzerland's Roger Federer serves to Britain's Andy Murray during their semifinal match at the Australian Open tennis championship in Melbourne, Australia, Friday, Jan. 25, 2013. (AP Photo/Aaron Favila)
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Switzerland's Roger Federer hits a return to Britain's Andy Murray during their semifinal match at the Australian Open tennis championship in Melbourne, Australia, Friday, Jan. 25, 2013. (AP Photo/Andy Wong)
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Britain's Andy Murray reacts during his semifinal match against Switzerland's Roger Federer at the Australian Open tennis championship in Melbourne, Australia, Friday, Jan. 25, 2013. (AP Photo/Dita Alangkara)
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Britain's Andy Murray serves to Switzerland's Roger Federer during their semifinal match at the Australian Open tennis championship in Melbourne, Australia, Friday, Jan. 25, 2013. (AP Photo/Andrew Brownbill)
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Britain's Andy Murray hits a return to Switzerland's Roger Federer during their semifinal match at the Australian Open tennis championship in Melbourne, Australia, Friday, Jan. 25, 2013. (AP Photo/Dita Alangkara)
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Switzerland's Roger Federer wipes the sweat from his face during his men's semifinal against Britain's Andy Murray at the Australian Open tennis championship in Melbourne, Australia, Friday, Jan. 25, 2013. (AP Photo/Andy Wong)
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Britain's Andy Murray hits a forehand return to Switzerland's Roger Federer during their men's semifinal at the Australian Open tennis championship in Melbourne, Australia, Friday, Jan. 25, 2013. (AP Photo/Rob Griffith)
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Britain's Andy Murray reacts after winning his men's semifinal against Switzerland's Roger Federer at the Australian Open tennis championship in Melbourne, Australia, Friday, Jan. 25, 2013. (AP Photo/Aaron Favila)
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Britain's Andy Murray falls over during his men's semifinal against Switzerland's Roger Federer at the Australian Open tennis championship in Melbourne, Australia, Friday, Jan. 25, 2013.(AP Photo/Rob Griffith)
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Britain's Andy Murray reaches for a return to Switzerland's Roger Federer during their semifinal match at the Australian Open tennis championship in Melbourne, Australia, Friday, Jan. 25, 2013. (AP Photo/Andrew Brownbill)
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Britain's Andy Murray falls over during his men's semifinal against Switzerland's Roger Federer at the Australian Open tennis championship in Melbourne, Australia, Friday, Jan. 25, 2013. (AP Photo/Dita Alangkara)
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Britain's Andy Murray hits a forehand return to Switzerland's Roger Federer during their men's semifinal at the Australian Open tennis championship in Melbourne, Australia, Friday, Jan. 25, 2013. (AP Photo/Rob Griffith)
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Britain's Andy Murray hits a return to Switzerland's Roger Federer during their semifinal match at the Australian Open tennis championship in Melbourne, Australia, Friday, Jan. 25, 2013. (AP Photo/Dita Alangkara)
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Switzerland's Roger Federer reaches for a return to Britain's Andy Murray during their semifinal match at the Australian Open tennis championship in Melbourne, Australia, Friday, Jan. 25, 2013. (AP Photo/Rob Griffith)
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Britain's Andy Murray gestures for a video replay of a line call during his men's semifinal against Switzerland's Roger Federer at the Australian Open tennis championship in Melbourne, Australia, Friday, Jan. 25, 2013. (AP Photo/Andrew Brownbill)
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Britain's Andy Murray reacts during his men's semifinal against Switzerland's Roger Federer at the Australian Open tennis championship in Melbourne, Australia, Friday, Jan. 25, 2013. (AP Photo/Dita Alangkara)
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Britain's Andy Murray falls over during his men's semifinal against Switzerland's Roger Federer at the Australian Open tennis championship in Melbourne, Australia, Friday, Jan. 25, 2013. (AP Photo/Dita Alangkara)
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In this photo released by Tennis Australia, US actor Kevin Spacey, top, watches the men's semifinal between Britain's Andy Murray and Switzerland's Roger Federer on Rod Laver Arena at the Australian Open tennis championship in Melbourne, Australia, Friday, Jan.25, 2013. (AP Photo/Tennis Australia,Fiona Hamilton)
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Britain's Andy Murray hits a return to Switzerland's Roger Federer during their semifinal match at the Australian Open tennis championship in Melbourne, Australia, Friday, Jan. 25, 2013. (AP Photo/Dita Alangkara)
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Britain's Andy Murray hits a forehand return to Switzerland's Roger Federer during their men's semifinal at the Australian Open tennis championship in Melbourne, Australia, Friday, Jan. 25, 2013. (AP Photo/Andrew Brownbill)
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Britain's Andy Murray hits a forehand return to Switzerland's Roger Federer during their men's semifinal at the Australian Open tennis championship in Melbourne, Australia, Friday, Jan. 25, 2013. (AP Photo/Dita Alangkara)