Defending champion Novak Djokovic joined top-ranked Rafael Nadal in the semifinals of the ATP World Tour Finals by defeating Juan Martin del Potro 6-3, 3-6, 6-3 on Thursday.
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Thu, 11/07/2013 - 3:28pm
Defending champion Novak Djokovic joined top-ranked Rafael Nadal in the semifinals of the ATP World Tour Finals by defeating Juan Martin del Potro 6-3, 3-6, 6-3 on Thursday.