Best of the best

Who was the best basketball player in history?
You can quote statistics and run simulations, but Doctor Odd has a time machine and can organize games between the actual players.
But he won’t. Because that would change the course of history.
Well, that, and it’s not allowed in the collective bargaining agreement between the players union and the owners. The owners don’t want any players using time machines to jump ahead into their free agency. Or going back to agitate for better terms for the early days of the league.
It doesn’t stop Doctor Odd from gambling on games, though.