What re-known World champion was also a great trainer?

Well you guys know your boxing! Your came up with so good names Like Buddy McGirt & Eddie Mustafa Muhammed (Gregory)...... But the one I had in mind..... Emile Griffith (5x World Middleweight Champion) I just checked the wiki, Griffith killed a man who touched his ass. Ouch.

Hall of Famer Yoko Gushiken trains KO artist and former WBC titlist Daigo Higa

Well you guys know your boxing! Your came up with so good names Like Buddy McGirt & Eddie Mustafa Muhammed (Gregory)...... But the one I had in mind..... Emile Griffith (5x World Middleweight Champion)

What re-known World champion was also a great trainer? Boxers who excelled to the highest degree tend not to excel as trainers. Case in point; Muhammed Ali, Sugar Ray Leonard, Roy Jones Jr, Roberto Duran, Michael Spinks, Oscar De La Hoya, Wilfredo Gomez, Lupe Pintor, Mike Tyson, Floyd Mayweather Jr, Tommy Hearns etc...aren't training any superstars... This is stupid thread. All those fighters named above chose not to become trainers So saying they dont excel as trainers is stupid. They chose to spend their time after boxing focusing on something else. WHOA!? stupid? well understand that just cause a fighter is great doesn't neccessarily mean that you're a good teacher. That's what this thread is about. Primarily, yes most decided on doing other things that had nothing to do with boxing. but others have try even if momentarily & yet they did not get that bug that makes you want to train fighters

I'll also mention Eddie Mustafa Muhammad. I felt he did some good work with some of the TMT fighters, most notably Jack. Almost got Gavril to beat Benavidez which was impressive.

Yeah, Garcia is up there. Nowhere near as good a fighter as McGirt but a much, much better trainer.

No Robert Garcia mention thus far is baffling. I'll throw in Roger Mayweather as well, though his impact is questionable due to only really having success with his nephew compared to Floyd Sr who did it with multiple fighters.

Roger Mayweather? McGirt and Robert Garcia are also good mentions

What re-known World champion was also a great trainer? Boxers who excelled to the highest degree tend not to excel as trainers. Case in point; Muhammed Ali, Sugar Ray Leonard, Roy Jones Jr, Roberto Duran, Michael Spinks, Oscar De La Hoya, Wilfredo Gomez, Lupe Pintor, Mike Tyson, Floyd Mayweather Jr, Tommy Hearns etc...aren't training any superstars... This is stupid thread. All those fighters named above chose not to become trainers So saying they dont excel as trainers is stupid. They chose to spend their time after boxing focusing on something else.

Cokes & Benton are for sure in the discussion. What's Breland done besides work with Wilder? And idk if that is THAT much of a success outside of him winning fights & giving him that jab which is his most effective weapon outside of his power. Wilder getting the nickname of Windmill & all that. Nothing a trainer should be throwing on his resume although I'm sure he's cashing some nice checks for that gig all the same. Pretty certain Breland also coached Vernon Forrest. Not sure who else he's trained, I thought there was another contender he was coaching. Not a 100% on that.

Buddy McGirt, Mark Breland, Curtis Cokes, and George Benton off the top of my head.

You're thinking Buddy McGirt? Excellent fighter but not such a good trainer IMO even though he's worked with a few good world champions. Freddie Roach very good trainer but not an elite fighter. John David Jackson was a good fighter and is a good trainer but not great at either. Jeff Fenech was an excellent fighter and a good enough trainer but he hasn't been the lead trainer for any truly top level fighters. I'm drawing a blank as to who was a great world champion fighter and then great full-time trainer.