Djokovic to challenge Nadal's ranking

Published:Saturday, May 21, 2011 7:22 AESTExpires:Friday, August 19, 2011 7:22 AEST

Novak Djokovic may take Rafael Nadal's number one world tennis ranking if he continues his unbeaten streak at the French Open.

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Tags: tennis, france, spain, united-states, serbia

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