Was tyson the hardest puncher in heavyweight history?.

[Lords Gym]

Wrong.......Ernie Shavers. Ali said that in a interview in 1985 that Ernie Shavers hit harder than anyone has ever hit him.

a guy people don't really think about as being a powerful puncher is Evander Holyfield. Evander can crack mates.. ask anyone who's fought him, they will tell you !