hell no--hes only been ko once---by muhammad ali. i still cant imagine how jimmy young survived his punches. any way he comes back as an old man-nobody could ko him--a 10+ chin and the second hardest puncher in heavyweight history and oldest hw champ puts him in top 10.

hardesthw punchers

1-earnie shavers
2. george foreman
3-rocky marciano--the original hard hitter