see: ferrer and his choke of the year against murray in the wimbledon semisI just think the rest of the tour isnt fit enough to hang with the Top 4 both physically & mentally in long hard games, especially when it comes to beatin those players in b2b rounds. They usually beat 1 of them then lose next round to 1 of the others. Ferrer's physically fit enough to hang with the top 4, but even he has mental lapses against those players when it comes to the big points.
the next to break the top 4 is
Ernesto "the latvian king" GulBEAST
only if he feels like it though
murray became erratic quickly