Mike Tyson.

Ali is definitely the greatest all time. He not only won in the ring. He also won outside. As great as he was he could've been even greater given that his prime years were wasted away because of his suspension. He shook and shocked the world in more ways than one. GOAT in and out.

Muhammad Ali of course!

People saying Tyson should download some Ali videos - just take a look.

Ali is by far the greatest that there will probably ever be - not an opinion.

@kenshiro12, I am very surprised that you did not have Sugar Ray Leonard on here but you did have Sugar Ray Robinson, Leonard was one of the greats mate he won loads of titles and is considered one of the best pound for pound fighters to this day, also Joe calzaghe won 46 lost 0 next time might be worth considering.

Muhamet Ali sure

Muhamet Ali of course.

It's Naseem Hamed in my opinion. I highly recommend him to anyone who's not familiar, his style is really creative and beautiful to watch.

Mike Tyson

Vinny Paz because of his inspirational story