Originally Posted by Prisoner of Birth
No way they were as athletic as players today. You either haven't seen their matches or you haven't seen a single match since the 90s.
That's just about every experts/ex-players have said about today's players are stronger, faster, more athletic, better trained, etc...
Tier1(goat): Federer; Tier 1.5: Laver, Gonzales, Sampras, Nadal, Borg;
Tier 2: Lendl, Connors, Rosewall, Tilden; Tier 2.5: McEnroe, Agassi