Ferrero, perhaps
But luckily ATP is not so "closed" like WTA, and we don´t have a "Real King" (sorry Hewitt) since Pete is relaxed
So, we can have many N°1 this year, some new ones (Nalbandian, Cañas, Henman, Costa) and old ones returning (Agassi for sure, Kuerten, Moyá, Rios (not, Rios will not..) )