My top 3 Greatest (different from the best)

1. Ali - No one ever, even to this day, saw a heavyweight who moved like a welterweight. Not to mention the fact that, outside of Marvin Hagler, the man had the greatest chin in boxing history, a fact that is outshadowed by his offensive prowess, much like the fact that Michael Jordan was the greatest defensive player in the NBA and that was overshadowed by his awesome scoring and dunking from the free throw line, etc.

2. Foreman - The man was Goliath. Imagine Marvin Hagler or Jake LaMotta getting knocked down 7 times in 2 rounds and knocked out. Impossible. But that's exactly what Foreman did to Frazier, who was from the exact same cloth as them. Strongest, most powerful heavyweight who ever walked the Earth.

3. Dempsey - This man was Tyson 60 years before Tyson. He was bigger and more famous than Babe Ruth. In the Golden Era of Sports, he was number 1. He didn't beat opponents, he mugged them into submission.