mike mcallum would bust up your ribs before takin you out...very underated...nowdays..hattons pretty old school....
Mustapha Hamsho could bust you up. Was an extremely tough guy and even put up an admirable showing against Hagler.
They've been mentioned already, but Chavez and Marciano immediately sprang to my mind. I think Tyson could do a remarkable amount of damage in a relatively short space of time. Thomas suffered a dislocated shoulder and Ruddock suffered a punctured eardrum and broken jaw.