I reckon Hamsho would win a brawling (close in) spoiling type decision. At one time his chin was rated above Hagler's and everyone else's in boxing for that matter. He'd smother and cramp Mugabi's style, throw some dirty stuff forth and take it imo.
wouldn't matter if he did get off on him. hamsho would smirrk punch him back and keep on comin' mugabi would wilt from the pressure and lose.:smoke