Sloane Stephens of the US celebrates after defeating compatriot Serena Williams in their quarterfinal match at the Australian Open tennis championship in Melbourne, Australia, Wednesday, Jan. 23, ...
more Sloane Stephens of the US celebrates after defeating compatriot Serena Williams in their quarterfinal match at the Australian Open tennis championship in Melbourne, Australia, Wednesday, Jan. 23, 2013. (AP Photo/Aaron Favila)
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