Argentina's Juan Martin Del Potro celebrates during his second round win over Slovenia's Blaz Kavcic at the Australian Open tennis championship, in Melbourne, Australia, Wednesday, Jan. 18, 2012. (AP ... more 
Argentina's Juan Martin Del Potro celebrates during his second round win over Slovenia's Blaz Kavcic at the Australian Open tennis championship, in Melbourne, Australia, Wednesday, Jan. 18, 2012. (AP Photo/John Donegan) less 
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Associated Press | Photo By John Donegan
Tue, Jan 17, 2012 11:26 PM EST