Re: If Ali fought Teofilo Stevenson ?
Boxing is boxing, but three rounds is very different from fifteen. One might even say someone who has the kind of lasting success at one of them had a physical disposition to it.
Maximizing your advantages in a short period of time requires a vastly different skillset than competing over five times that same distance. Who knows if he'd even have been a lasting contender?
The chances of him beating Ali at his peak even if he did turn pro early are statistically miniscule.
Random thought: What if George Foreman had remained an amateur his entire career?