Who were Boxing's best, who fought in one division?

Who were the best to fight mainly in one of the classic seven (Heavyweights obviously excluded) divisions?

The criterion is: A fighter must of fought for an eight year period (or there entire career if less) in a division:

Light Heavyweight: above 160 to 175

Middleweight: above 147 to 160

Welterweight: above 135 to 147

Lightweight: above 126 to 135

Featherweight: above 118 to 126

Bantamweight: above 112 to 118

Flyweight: up to 112

Common sense can be used when a fighter is a few pounds over the limit in a non title bout, or has one bout at another division before coming back down (Napoles or Foster being examples).

Also, it is clear early on, particularly in the lower weights, the divisions weight limits were structured different to their modern equivalents, so again common sense may be needed in coming to your conclusions.

 

Tszyu was good, but not good enough to top the Welterweight list. Nor a sub sectioned 140lbers.

 

He does not qualify.

 

Chavez is unlucky; he does the top his division because of (not least) Benny Leonard and Duran...