Foot stomping might not affects for movements but it would distracts him not to be on focused to the coming powerful shot. This tactic is commonly uses to WWF to assure winning the difficult game.
Look, how could Marquez step on Manny's foot if in the first place Manny's right foot was outside Marquez's left. And how in the world will foot stomping cause you to raise your head and not tuck your chin while going on the attack?
To raise his head is no way but he could avoid it down ward. Just look at his practice in the mits with Roach and you will see how easy Manny could avoid that punched if he would not distracted.
Yeah, look at his practice with the mitts. he was rolling to the right and turning Roach around which means that his right foot should already be outside his adversary's lead left foot. In that last sequence, Manny double pumped with his right and drove right into Marquez, his head held high. Had Manny gone to his right, with his head held low, he could have avoided your so called foot stomping and not have been nailed with the right hand.
Distracted?? He should not have come in with his chin tucking out in the first place. That was a very short punch compared to the one which knocked him down in the third round. At that very short distance and his chin held up and centered on Marquez's right hand, there was no way Manny could slip the punch even if he wasn't "distracted". If there was any distraction, it was Manny's own overeagerness to throw the left
. At the very least he could have held the left hand to block the punch but he was preparing to throw the left. Don't tell me again that the third round knockdown was a product of foot stomping on the part of Marquez. That punch came a mile away and yet Manny wasn't able to block or slip it.