You remember this movie.
George Clooney and Quentin Tarantino go to Mexico and act in all kinds of demented ways. Juliette Lewis is somewhat strangely intriguing, and Harvey Keitel is, well, Harvey Keitel. They get to that big weird bar or tavern and Cheech starts talking about all kinds of p-(well, we know Salma Hayek is in there scorching while slithering with a snake).
But none of that's important.
Its how Seth (Clooney) and Richie (Tarantino) decided to act in Saul "Canelo" Alvarez territory that's really important here. They were cold-blooded, psychotic, possessed and relentlessly in pursuit of escaping that situation in dominating fashion.
If Alvarez is to hand Floyd Mayweather his first defeat, I believe he needs to be all of these things. It will take the most serious mind to challenge and put Floyd in a dark place. One he cannot escape. But to do this, Canelo must be committed to attacking him [intelligently] "From Dusk Till Dawn", or from the opening bell to the final one (if it gets that far). First, let's breakdown Canelo and his game.
The Report Card on Canelo.
Boxing Ability: A 
Offense: A 
Defense: A- 
Ring Generalship: A 
Speed: B+ 
Chin: A 
Stamina: A- 
Power: A 
Ring IQ: A 
Overall Rating: 92.6
What Canelo must do to win.
In this fight with Mayweather, I think of Canelo as an Indian gray mongoose, capable of fighting and killing a venomous snake- even a Black Mamba (which is what I see Mayweather as). They are immune to the snakes' venom, and knows they only strike in singular fashion. With remarkable agility, balance and coordination, they mostly evade these strikes, and then offer counter strikes before subduing and destroying the snake. Given his age, build, temperment, strength and resolve, to go along with what a mongoose can do, Alvarez has the style to take down the deadly snake that is Mayweather.
He is a boxer first, and Floyd knows this. In fact, Floyd Sr. will probably implement a gameplan revolving around Floyd's clinical 2009 dissection of Juan Manuel Marquez. Floyd will be much stronger than he was for that fight- but a little slower because of his added strength and age. He'll look to discourage Canelo, which will only happen if he waits too much or fails to jab Mayweather constantly.
Stylistically, Canelo is very close to Marquez in some ways (who he can't stand- no love lost there), but he's naturally more aggressive than Juan Manuel and unleashes very damaging combinations. He has solid footwork, technique, and very good technical ability. He's very flexible, punches "through" his opponent and will punch "with him". If he hits Floyd hard on his arms or hands often enough, he'll break him down enough to eventually time Floyd with shots to the head.
He must attack Floyd in an almost sadistic and methodical way. I get the sense he doesn't like Floyd very much anyway- so he should have no problem with this. He cannot have any regard or respect for Mayweather whatsoever, and maul him if at all possible.
If Canelo can avoid over-exuberance, and the moment doesn't become too big for him (which I don't think it will), this will be his fight to lose. That will be pivotal in maintaining his conditioning and endurance. He is vastly underrated in ring intelligence and speed, and has the chin to absorb Floyds venom. If Canelo successfully limits Floyd's space and forces occasional firefights, he has a great chance to beat Mayweather by stoppage.
Up Next: The Superfight Edition [XIII] Floyd: The Devil's Own