| Weight Class | Minimum Weight | Upper Weight Limit |
|---|---|---|
| Lightweight | 145 lb (65.8 kg; 10.4 st) | 155 lb (70.3 kg; 11.1 st) |
| Welterweight | 155 lb (70.3 kg; 11.1 st) | 170 lb (77.1 kg; 12.1 st) |
| Middleweight | 170 lb (77.1 kg; 12.1 st) | 185 lb (83.9 kg; 13.2 st) |
| Light Heavyweight | 185 lb (83.9 kg; 13.2 st) | 205 lb (93.0 kg; 14.6 st) |
| Heavyweight | 205 lb (93.0 kg; 14.6 st) | 265 lb (120.2 kg; 18.9 st) |
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