Here's the system for getting by everyone in one round of Punch Out. This system works on 9 out of ten Punch Out machines. I have seen some where the first level is unusually hard and the latter couple of techniques don't work. Keep guard up till his eyes glow for a big punch, dodge, and hammer him with rights and lefts to the face. Repeat till down.
Concentrate blows, especially lefts, to the abdomen.
When he backs up and charges in, hit him with a blow to the stomach as soon as he charges into you, he'll go down for the count after the 2nd or third time. Right, dodge, left left. Right, dodge left left. A hit to the stomach when he is right under you puts him down for the count, but if your reflexes aren't optimum, you are better off at dodging and continuing the fight. TO BALD BULL except on the bull charge.