If gamboa can maintain his speed @ 135 he will box the hell out of rios and win a ud maybe even late stoppage. Rios is there to be hit. Might resemble mayweather-gatti or mayweather- corrales.
of course gamboa has a chance, i favor rios slightly but rios has never faced anyone like gamboa (it's impossible, gamboas a one of a kind style). I'd say 55-45 in favor of rios but can see gamboa being too quick for him.
First of all, an earlier poster said that the two fighters would be the same weight when they entered the ring. This is not true. Gamboa will eat his way up to 130/135. Rios will starve himself to get there. Rios will weigh 145/150 at fight time. Has everyone forgotten how many times Gamboa has been knocked down? He can be hit rather easily when he is timed. Rios is a master at timing his punches and he knows how to make a fighter pay when they make a mistake. As I have said continualy, "If you can't hurt Rios, you cannot beat Rios". Gamboa can land his best shots all day and not hurt Brandon but on miscue on Gamboa's part and Rios will put him down for the count. This is a bad match up for Gamboa. Rios KO in 10 or less.