He be squared up with a high guard where he barely moves his head.
getting hit by that punch has more to do with your hip angle and your spacing.
theres two ways to get hit with a right hand.
when you stand squared, you get hit by straight right hands through the center, like this.
and when you walk into a gym that is why most trainers will put you into a three quarter hip angle; thats to stop that straight right hand from hitting you. when you stand three quarter to block, the angle a straight right hand needs to have to hit you is taken away.
theres just one problem with that, and it is that, when you stand three quarter to block a straight right hand through the center, you let yourself get hit by a looping overhand right behind the glove, like this.
so on the one hand you take away straight right hands through the center.
at the cost of getting hit by looping right hands behind the glove.
but there is a solution to that also. and here it is. since he has to reach around your glove to land it, if you take a little step back, he cant reach behind your glove and that punch cant land. when you stand three quarter with your hands up, you take away the straight right hand through the center, but if you take a little step back, you will also take away that overhand right behind the glove. so that if you are standing three quarter with your hands up while scooting back just a little, a right hand literally cant hit you. you take away both of the ways a right hand is able land on you at the same time.
if you watch the canelo and bivol fight you will see bivol in that three quarter hip angle with his hands up, scooting back in little increments. theres not a lot canelo will be able to do with that, in a rematch, or in any fight. what i saw of benavidez in the plant fight is that if you flinch at him he jumps back with his hands up. that looks different but the idea there is basically the same. he does get squared up but i see him mostly operating in a three quarter hip angle, like most fighters. and if plant loaded up a right hand he would jump back and that right hand would just fall short.