The royalty of Federer can resist for a lot of time (also another 3 years, I think) but who could be the new name of tennis to take his place at number 1 in the future? Too easy to tell Nadal. If Nadal is in good physical conditions, he can make a lot of points on clay and enough on hard court to be number 1. But other young tennis players to watch are Tomas Berdych from Czech Republic and Novak Djokovic from Serbia (strong on all surfaces!). And do not forget French Monfils and argentine Del Potro (but only on clay court for now). What do you think?