Well, for awhile there, the future was starting to look really grim for Rafa after knee injuries stopped him in 2 of the first 4 tournaments this year. Considering how he struggled the year before, I feared that Nadal's career was about to go downhill as the state of his knees seemed to be detereorating rapidly. But now, I'm not so sure anymore. Nadal's clay court season so far has been a pleasant surprise, going on a streak of soon to be 4 consecutive tournament wins without any sign of an injury. Could it be that Nadal's chronic knee problems are a thing of the past? Or will they resurface post-Wimbledon? Either way, I think it's safe to say that Rafael wont have any problems with aching knees on clay or grass.