after analyzing disk one and the very beginning of disk 2 here what i conclude. Tysons first 19 fights were against 17 jobbers and maybe two legit prospects (at the time) by his 19th fight it could be seen that jab and grab strategies frustrated him and kept him off balance by his 19th fight there is a slightly noticeable decline in his mobility and will to string a bunch of punches together.

Then he fights a homeless mans ali (James "i'm kinda fast but not really" tillis") Then theres the trevor berbick fight. Berbick takes the fight to tyson and im telling you even at this point, i've noticed a difference in how he fights guys. Winning the belt tho gave him a new found edge but by the time the buster douglas fight came around he wasn't the same fighter.