As a martial artist who's done some rudimentary boxing training (and watched whole lot more), I was asked by some friends recently to dissect a hypothetical boxing v. traditional TKD/karate match-up. I don't want to regurgitate what I said, since I don't want to drown this forum in controversy, but then we also moved to a follow-up discussion that may be even more interesting and worth pondering here: Which great boxers would do well against karatekas or kickboxers or even MMA fighters? The first guy that came to mind - and immediately - was Roberto Duran. A point that I wanted to stress to my friends was that a classic "out-boxer" like Ali would fare horribly against a karateka or kickboxer, because you cannot out-range or out-distance a kicker with a punch. Instead, you need to be able to close quickly, be able to deliver devastating blows, and have good enough of a chin to survive at least glancing kicks (I don't think even Hagler can survive, say, a full flush spinning back heel kick, because the power of a kick is exponential to a punch). Duran fits this requirement perfectly: He can close like no other; he is "hands of stone"; and his chin - while not comparable to Hagler or LaMotta - is excellent. A bonus is that his boxing was really an amalgam of boxing/grappling, and he could easily learn to translate his shorter punches to elbows at the distance he operated. Also, the guy was a mean son of a gun, and he had serious street fight credentials, from what I have heard. Who else do you guys think? Hagler was another guy I thought of, though Duran checks of the boxes far better except chin. I know people will say Tyson, and sure he has the physical tools and skill set; but does he have the mental toughness? Oh, and you can't pick boxers who were also actually accomplished karatekas/kickboxers, etc.: So no Samart (who may have been the greatest Muay Thai fighter of the last century) please!