18-year-old Cassius Clay...

https://players.brightcove.net/5446914889001/j6b1tPoM4_default/index.html?videoId=6095345456001

...wins the gold medal for boxing at the Rome Olympics in 1960 - can you tell he'd be the GOAT from this fight?

Muhammad Ali became the GOAT by not ducking ANYONE !!!

You can see flashes of it, especially in defence. His ability to slip punches by millimetres was astounding.

The definition of "float like a butterfly, sting like a bee".

Draft Dodger 

TripleDecker - 

He was NOT the greatest of all time. He was so overated. Prime for prime, Iron Mike Tyson would have knocked him out in 3 rounds.

LOL

Ziggy clearly outboxed him. What an eye opener. 

TripleDecker -

He was NOT the greatest of all time. He was so overated. Prime for prime, Iron Mike Tyson would have knocked him out in 3 rounds.

Ali beat some of the greatest heavyweights ever - Sonny Liston, Joe Frazier, prime George Foreman. 

A prime George Foreman would have murdered Tyson