UD why? Youth Oh wait he's nearly in his 30's himself Ortiz, Berto, Guerrero... None of these boxers are likely to beat Mayweather. Guerrero's decision victory's in his past 5 fights are not very impressive. After beating up Berto in the early rounds he should have had an easy job finishing him or taking a TKO... but nope. If Guerrero had a nice amount of speed it would be more interesting otherwise I can see this only going one way.
Its whether he has the capabilities of taking advantage over 12 rounds of mayweathers so called decline, or whether he just has a punchers chance?
A Guererro decision is the smart choice of those options. Mayweather's workrate ain't that impressive @this stage.
I don't rate Guerrero's defence at all. Mayweather might bully this guy without even having to lift a leg.
Guerrero by KO is less unlikely to happen as getting a decision. Because even if he deserves the nod, he probably won't get it against Floyd.