Nadal's doctor says injuries may flare up again

Mikel Sanchez, the surgeon who treated Rafael Nadal's knees earlier this year, tells Marca that the injury has healed but the physical toll of training and playing could cause it to re-occur at some stage.

Nadal received injections of enriched blood plasma in his knees in May and July. After winning Monte Carlo, he missed Barcelona to undergo treatment. Since then, he has lost only three matches and won five tournaments, which includes the French Open, Wimbledon and the U.S. Open.

Will Nadal won as many titles as Federer?

I dont think so.