BoxRec

...in one weightclass, but you feel were at their absolute peak in another?

Felix Trinidad: Welterweight (Achievements), Jr. Middleweight (Absolute Peak)

Shane Mosley: Welterweight (Achievements), Lightweight (Absolute Peak)

Oscar De La Hoya: Welterweight (Achievements), Jr. Welterweight (Absolute Peak)

Michael Moorer: Heavyweight (Achievements), Light-Heavyweight (Absolute Peak)

Evander Holyfield: Heavyweight (Achievements), Cruiserweight (Absolute Peak)

Roy Jones: Light-Heavyweight (Achievements), Super-Middleweight (Absolute Peak)

Three fighters immediately came to mind for me:

Tommy Ryan and SSR are both remembered as middleweight champions, but were probably better at welterweight.

Ezzard Charles won the heavyweight title, but he was arguably the greatest light-heavyweight who ever lived.

gene tunney - remembered as being heavyweight champ and beating dempsey x2 but was at his peak at light heavy.

bjermaine wrote:gene tunney - remembered as being heavyweight champ and beating dempsey x2 but was at his peak at light heavy.

I considered Tunney, but are you sure he qualifies? I know he took the title, which he failed to do at the lower weight, but keep well in mind he had just three title fights at Heavyweight, with only a handful of others at Heavy (albeit, against commendable opposition).

In an 85+ bout career, I say Tunney accomplished more at Light-Heavy than Heavy.

Michael Spinks

Barney Ross
Peak: 135-140
Achievements: 147

Henry Armstrong
Peak: 126 (or just above)
Achievements: 147

Bob Fitzsimmons
Peak: Middleweight
Achievements: Heavy

Sam Langford
Peak: probably somewhere between welter and light-heavy
Achievements: heavy

Jeff Fenech
Peak: 122
Achievements: 126 & 130

A few more examples...

Bobby Chacon
Peak: 126
Achievements: 130

Wilfred Benitez
Peak: 140
Achievements: 147-154

Bobby Cassidy
Peak: Middleweight
Achievements: Light-heavy and cruiser

Glen Johnson
Peak: 160 or 168
Achievements: 175