Muhammad Ali
4
I defer to the boxing experts on this site- but it's hard to rank Ali out of the top list of all-time boxers. Even a casual fan like me knows that Ali beat two warriors (Frazier and Foreman) on his way to a stellar resume. . .but there are losses that Ali-philes tend to overlook. As a heavyweight, he's a solid five. All-time? Solid four.
