Marvin Hagler Reveals The 5 Greatest Boxers He Ever Saw

Marvin Hagler Reveals The 5 Greatest Boxers He Ever Saw Marvin Hagler ranks the five men who earned his respect — and two of them never even fought him. From Roberto Duran's fearless 1983 stand to the brutal 1985 war with Thomas Hearns, this video breaks down the fighters, moments, and inherited standards that shaped Hagler's own definition of greatness. We dig into his complicated bond with Sugar Ray Leonard, the man he never forgave but never dismissed, plus the deep Brockton roots connecting him to Rocky Marciano and the towering shadow of Sugar Ray Robinson. Built from documented interviews, trainer testimony, and fight footage, this is a fighter-by-fighter look at who truly earned Marvin Hagler's respect — and why.