No, never happened before cuz typically they all played the same events. Probably happened that the top 2 had won but never the top 3 players in the world. It is a special accomplishment which I expect CBS to play to the hilt next week, with good reason.
On your topic of parity, yes, touche, to some degree. But this is far from that. These top 3 guys are head and shoulders above the rest of the 200 tour players. Again, don't think it's ever been seen in golf, especially given the depth of field today. The other 3somes you mentioned were separated by age more than these 3. It's unique and will be acknowledged as such over time. I'm just trying to bring some early perspective on it.
I'm just saying you can't be sure about that. You don't know that Ben Hogan, Byron Nelson, and Sam Snead didn't play a tournament where all three had won their last start. Or some older trio of players, or Arnie, Jack, and Player… or… some other trio before 1986.
That's only 30 years. Golf pre-dates that by a fair number of years.
You do know the fall line curves quite a bit, and that what happens at the hole has very little to do with what a putt does overall?
You're working on stuff that's far less than optimal.
You should care significantly less about the area two or three feet around the hole than you seem to.