I didn't even know people questioned his chin. I go back to the fights with Razor Rudduck where Tyson proclaimed Rudduck hit like a mule but he refused to be hurt. When he got knoced out it was a result of an accumulation of punches. Douglass punished Tyson and Holyfied beat him pretty good. Tyson of today does not posess the boxing skills of the old Tyson. Not even close, he doesn't use a jab, head movement suspect, not nearly as accurate, but still able to knock people out with one punch. He still has power, but not much else.

Nobody can be you but you - Steve Arrington