I'm the only one that voted for marciano!? Someone said foreman hit hardest pound for pound. I'd have to side with the 5'11 184 marciano being the pound for pound hardest puncher and the hardest punching heavyweight ever. Tyson hit hard no doubt but it was his speed and technique that added alittle something to it. Foreman hit hard as well but he was also HUGE. Marciano did the damage he did being extremely undersized.