Best trainer.

Obviously it's Ray Corso

Did the Petronelli Brothers produce any champions besides Marvin Hagler? And which fighters did Jimmy Montoya train? Just curious.

I doubt you'll see what a trainer knows by watching one fighter in a few fights. First off he needs a student that has some ability to first absorb the lessons then be able to carry out the techniques! What the best trainers do is accentuate a fighters positives and try to eliminate faults that could cause him being defeated round by round. Angelo Dundee was very good at getting the best out of a fighters best attributes and masking the fighters weaknesses. With my statements in mind I think Abel Sanchez does a great job "preparing" fighters to get into shape, work on methods tailored for opponents, then getting them ready mentally. He has the best facility and you'll notice a lot of trainers will send their fighters to him for prepping! A great trainer needs to find and develop great fighters to begin with, that's the hard part. Developing a young kid to become a great fighter is a constant battle with the "streets" and you loose far more than you win and the best talents don't usually have will to sacrifice. the best I know of; Mr. Blackburn Dundee (before Ali) Petronelli Bros. George Benton Eddie Futch Johnny Davenport Jimmy Montoya Pat Nappi Me....................hahaha and a few that I'm forgetting. I had a few really good ones but I would have loved to have worked with guys like Pete who was high skilled and had all the coordination skills in the ring you could possibly need. Ray Corso

To me there is no such thing as a best trainer, at least in an overall sense because fighters are so different that no one could have a way to good work with all different kinds. There would be a best trainer for a specific guy. I will say this though the guy I see the most of is John David Jackson, if so many guys are going to him there must be something to what he brings to the table.

Oh, I totally forgot about Naazim Richardson.

Robert Garcia by a landslide. He trains alot of fighters and they rarely take an L and they all fight differently so he trains different style, and when his fighters take an L its only against the best i.e. Rigo, Pacquaio, Mayweather, he trained numerous fighters into world titles Donaire,Rios,Maidana,Cullar,Gradovich,Garcia etc etc Yup Robert Garcia by a landslide. Rigondeaux made Donut irrelevant.

Roach/Garcia/Nacho Edit: I'm throwing Ronnie Shields into the mix Ronnnnnnnieeeee!!!!

Roach and Nacho.. Leading more on Roach Roach doesn't teach defense.

Who, in your opinion, is the best trainer in the business right now? Ronnie Shields and it is not even close.

Anybody but the fight whisperer. that was funny as **** lol

Eevery single fighter minus Ward has took bad beating under his tutelage true lol, but i like how virgil accomodates to styles that are complete different from each other

He's got his brother, Julio Diaz. I think he's got quite a few fighters actually. Interesting. I haven't been paying attention.

Yeah I'm not familiar with any other fighters he has. A shame, really. He's got his brother, Julio Diaz. I think he's got quite a few fighters actually.

who does diaz have just bradley and figuerora huh Yeah I'm not familiar with any other fighters he has. A shame, really.

I'd like to see Joel Diaz work with some other fighters as well. I like his gameplans.

virgil hunter is up there along with freddie and nacho. robert garcia is a little overrated imo. aside from mikey who im pretty sure he doesn't really train, all of his gameplans are just throw a lot of punches and go for the knockout lol

Nacho for me, the man knows everything unlike some of the others mentioned above just know aggression.

Nacho Beristain is the truth Floyd Mayweather Sr. Ronnie Shields RIP Jose "Buffalo" Martin -- always think of him when this topic comes up

Robert Garcia and Virgil Hunter imo.

nacho closely followed by pedro diaz and floyd sr imo. freddie roach, robert garcia, joel diaz, javon hill, virgil hunter, ronnie shields, rob mccracken and nazim richardson are all top notch trainers as well.