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Photo by: Mark J. Terrill

Juan Martin del Potro, of Argentina, celebrates after defeating Novak Djokovic, of Serbia, in their semifinal match at the BNP Paribas Open tennis tournament, Saturday, March 16, 2013, in Indian Wells, Calif. Del Potro won 4-6, 6-4, 6-4. (AP Photo/Mark J. Terrill)

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