Overeem has legions of worshipers, yet does not have a great record compared to a lot of the top heavyweights. But that bod! And Roy Nelson among a few other fighters get called morbidly obese. I am not saying everyone does this, but the kids really fall into this trap. So this is what the only undefeated heavyweight boxer looks like. This guy won 49 fights, 43 by KO. He actually only weighed around 185 lb's for most of his career.