Rafael Nadal learns to control pain in fighting back to No 1 again

Rafael Nadal is back on top of the world rankings after a remarkable comeback but the 27-year-old Spaniard revealed that he is still having to deal with discomfort in his troublesome left knee. "I have pain a lot of days," Nadal admitted on the eve of his opening match against Alexandr Dolgopolov at the Shanghai Rolex Masters.

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