Obviously, Nadal will need to modify his style if he is to stay in the game for a long time.To have tendinitis in both knees at his age is not good. I have had the same injury and basically it feel like your knees are going numb on court. I for one think he needs to be more agressive and hit more winners to cut down on running time. If we look back at players who had amazing court coverage as one of their key weapons, they all seem to struggle to be more agressive when the speed disappeared from their legs. Hewitt and Chang come to mind. Of course you would put Nadal in a different category because he has a ninja forehand. However, can he truly change his game and win many more slams. He gets very few cheap points from his serve...I think history is against him. Being more agressive is not his natural approach...it will be interesting to see what he and Toni decide.