Switzerland's Roger Federer reacts during his semifinal loss to Britain's Andy Murray at the Australian Open tennis championship in Melbourne, Australia, Friday, Jan. 25, 2013. (AP Photo/Mark Kolbe,Pool)

Associated Press
Switzerland's Roger Federer reacts during his semifinal loss to Britain's Andy Murray at the Australian Open tennis championship in Melbourne, Australia, Friday, Jan. 25, 2013. (AP Photo/Mark Kolbe,Pool)
Switzerland's Roger Federer reacts during his semifinal loss to Britain's Andy Murray at the Australian Open tennis championship in Melbourne, Australia, Friday, Jan. 25, 2013. (AP Photo/Mark Kolbe,Pool)
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