cottos guard vulnerable for violent upper cuts?

yeah he needs to stand up straighter so his chin isn't hanging out there to uppercutted, which to be fair steward was trying to get him to do when they worked together. yea i remember watching the vids..he did pretty well at boxing mayorga and correct me if im wrong steward was his trainer against the jewish kid at yankee stadium but he didnt look great at all in the yankee stadium fight ..cottos new trainer suites him well but that chin and guard with his head down is really vulnerable especially against a towering margarito im surprised he didnt let off any inside upper cuts when they were standing in the pocket for some short exchanges

yeah he needs to stand up straighter so his chin isn't hanging out there to uppercutted, which to be fair steward was trying to get him to do when they worked together.