Originally Posted by hoodjem
I believe that Pancho and the Rocket can beat that.
I think he's talking about the open era, AND after the establishment of the ATP.
Tier1(goat): Federer; Tier 1.5: Laver, Gonzales, Sampras, Nadal, Borg;
Tier 2: Lendl, Connors, Rosewall, Tilden; Tier 2.5: McEnroe, Agassi