Apparently the Rios fight plan was to go, get beat up, then hope the check is good. Garcia stole $400K from Rios, he didn't do his job. What was the plan? He couldn't counter with his hands in front of his face and never once made an aggressive move to turn it into the type of fight he needed if he was going to win. Have they given up on Rios as a fighter, cashed it in, or is there no one in his camp boxing smart enough to make him competitive in that fight?
You fight Pac and you have to take away that move to the right- marquez is savvy enough to draw him in and counter and play it that way, to offset his speed, most aren't. Rios needed to make it a fight and to do that he needed to take away that escape route. But he never once made a strong move with his feet to keep Pac in front of him. When Pac goes to his left, he doesn't like to punch (though he will when he realizes that you are just going to put your hands in front of your face and let him), he goes that way then spins back out to his right.
You have to step up with your left foot and throw the left hook, block that escape route and keep him lined up for the right hand. Early on when Rios pushed him to the ropes and Pac grabbed, they just accepted that as ok; his corner should have told him to throw Pac on the floor and spit at him. Let him know that he has to fight you. his only chance was to make it a fight and Rios didn't come to fight.