I'm a fan of both Fed and Nadal. But I don't know how long his body, bones, ligaments, shoulders can hold up for many years. His style is grueling. Compare this to Fed's smooth, graceful movements - this might give him a longer playing time. I play like Nadal with lots of power and chasing balls around and it is really taxing. I wish I'm smoother but it's hard to change. Do you think he'll last to win lots more slams?