Djokovic, Del Potro reach semis at Ind

Djokovic, Del Potro reach semis at Indian Wells
AP - Sports
Caroline Wozniacki, of Denmark, returns a shot to Angelique Kerber, of Germany, at the BNP Paribas Open tennis tournament, Friday, March 15, 2013, in Indian Wells, Calif. (AP Photo/Mark J. Terrill)
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