Re: When will Federer lost NO 1???
It's hard to tell. It all depends on Roger, really. If he keeps playing like this (crap) it will be by the end of the year.
On the other hand, if he lifts his game, it'll be at least be around US Open 2009.
And I think when he does lose it Rafa will steal it from him but eventually Nole will become the #1 for a long period.