Welterweight Super Middleweight Heavyweight Lightweight Junior Middleweight Cruiserweight Super Bantamweight Weight Disparity Weight Discrepancy Jumping Weight Classes Fighter Preparation Light Heavyweight Middleweight Junior Welterweight Super Middleweight (168 pounds) Middleweight Division 168-pound Division Super Middleweight Division Middleweight (160 pounds) Light Heavyweight (175 pounds) Welterweight (147 pounds) Bantamweight Junior Lightweight Cruiserweight Division Heavyweight Division 140-Pound Naoya Inoue Light Heavyweights 140 pounds 140 Pounds Terence Crawford Lightweight Division Men's Boxing Champions Flyweight Impact on Fights Women's Boxing Undisputed Champions