1991 FINAL STANDINGS
| American League | ||||
| East | W | L | Pct | GB |
| California Quakes | 111 | 51 | .685 | 0.0 |
| Fort Worth Panthers | 102 | 60 | .630 | 9.0 |
| Montana Cutthroats | 81 | 81 | .500 | 30.0 |
| Stockton Wings | 73 | 89 | .451 | 38.0 |
| Chicago Demolition | 67 | 95 | .414 | 44.0 |
| West | W | L | Pct | GB |
| Portland Mavericks | 95 | 67 | .586 | 0.0 |
| Flossmoor Flying Squirrels | 87 | 75 | .537 | 8.0 |
| Mexico City Chihuahuas | 73 | 89 | .451 | 22.0 |
| Janesville Juggernauts | 67 | 95 | .414 | 28.0 |
| Detroit Stars | 54 | 108 | .333 | 41.0 |
| National League | ||||
| East | W | L | Pct | GB |
| Sugar Land Skeeters | 110 | 52 | .679 | 0.0 |
| Michigan Marauders | 77 | 85 | .475 | 33.0 |
| Missouri Black Bears | 75 | 87 | .463 | 35.0 |
| Valdosta Bombers | 69 | 93 | .426 | 41.0 |
| Manhattan Gas Hornets | 35 | 127 | .216 | 75.0 |
| West | W | L | Pct | GB |
| Germantown Grays | 105 | 57 | .648 | 0.0 |
| Steel City Sluggers | 102 | 60 | .630 | 3.0 |
| Winnipeg Goldeyes | 93 | 69 | .574 | 12.0 |
| Clovis Cougars | 81 | 81 | .500 | 24.0 |
| Long Beach Titans | 63 | 99 | .389 | 42.0 |