All I can say is, what's not to like about the Mayweather family. They went through some hard times, got up and bounced back. Now, the son is the highest paid and most skilled boxer in the world. P4P #1. The Father and Uncle are making more bank as trainers than Joe Calzaghe made in his whole career. Plus, they are only half way finished. Ultimately, Mayweather Promotions will take over for GBP and very likely become 10x as large. As Don King likes to say; Only In America!
Sr had Dawson looking like a beast. According to Sr now Chad couldn't spell box if you spot him a B and a X.
If you remove Floyd Jr. from the equation Floyd Sr. and Roger are just a notch above average trainers.
Ignacio Beristain or the recently departed Emanuel Steward. Beristain trained Ricardo López - four time champion (hall of fame member) Juan Manuel Márquez - four division champion Rafael Márquez - two division champion Daniel Zaragoza - four time champion (hall of fame member) Humberto González - four time champion (hall of fame member) Victor Rabanales - bantamweight champion Oscar De La Hoya - six division champion Jorge Arce - four time champion Guty Espadas - flyweight champion Guty Espadas, Jr. - featherweight champion Alfredo Angulo - jr middleweight prospect Enrique Sánchez - bantamweight champion Gilberto Román - two time champion (with 11 title defenses) Jhonny González - two division champion Melchor Cob Castro - two time champion Rodolfo López - featherweight champion Alejandro Barrera - jr middleweight prospect Abner Mares - bantamweight champion Vicente Escobedo - former title challenger Juan Carlos Salgado - two time champion Jorge Paez - two time champion Steward trained: Dennis Andries Wilfred Benítez Julio César Chávez Kermit Cintron Miguel Cotto Chad Dawson Oscar De La Hoya Domonique Dolton Yuriorkis Gamboa Miguel Ángel González Mickey Goodwin Naseem Hamed Thomas Hearns Evander Holyfield John David Jackson Hilmer Kenty Ole Klemetsen Wladimir Klitschko Andy Lee William "Caveman" Lee Lennox Lewis Oliver McCall Mike McCallum Gerald McClellan Milton McCrory Steve McCrory Michael Moorer Jimmy Paul Graciano Rocchigiani Adonis "Superman" Stevenson Jermain Taylor Duane Thomas James Toney Syd Vanderpool
He's passed away now, obviously, but I think you have to consider Manny Steward part of this era. As such, I definitely put him at #1
I personally think Uncle Roger Mayweather is one of the best trainers I have ever seen. I rate Miguel Diaz, Joe Mensah, Curtis Cokes, Eddie Futch, Angelo Dundee and Manny Steward highly.