| Divisional | ||||||||||||||||
| Year | Team | W | L | Pct | GB | L10 | Strk | Recent | RF | RA | Mgn | Mgc | Pythag | PD | Div | |
| AL |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| 1991 | St Louis Perfectos | 89 | 73 | .549 | - |   | 5-5 | L3 | lllwwwwwll | 699 | 672 | 27 | 1 | 84-78 | 5 | 55-43 |
| 1991 | Bloom County Losers | 89 | 73 | .549 | - |   | 7-3 | W4 | wwwwllwwlw | 816 | 671 | 145 | 1 | 97-65 | -8 | 62-36 |
| 1991 | Hanover-Horton Heffalumps | 84 | 78 | .519 | 5 |   | 6-4 | W1 | wllwwwlwlw | 808 | 773 | 35 |   | 85-77 | -1 | 49-49 |
| 1991 | Palos Hills Pit Vipers | 82 | 80 | .506 | 7 |   | 6-4 | L1 | lwwwwlllww | 759 | 712 | 47 |   | 86-76 | -4 | 53-45 |
| 1991 | River City Rhinos | 78 | 84 | .481 | 11 |   | 4-6 | W1 | wllllwwlwl | 627 | 651 | -24 |   | 78-84 | 0 | 42-56 |
| 1991 | Ilion Golden Bombers | 74 | 88 | .457 | 15 |   | 5-5 | L1 | lwwlllwlww | 659 | 792 | -133 |   | 66-96 | 8 | 49-49 |
| 1991 | Boston Stranglers | 64 | 98 | .395 | 25 |   | 5-5 | L1 | lwwlwwlwll | 643 | 760 | -117 |   | 68-94 | -4 | 43-55 |
| 1991 | Pittsburgh SmokinBats | 58 | 104 | .358 | 31 |   | 2-8 | W1 | wlllllllwl | 704 | 883 | -179 |   | 63-99 | -5 | 39-59 |
|   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| NL |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| 1991 | Useless Bay Water Apes | 113 | 49 | .698 | - |   | 5-5 | L1 | lwwlwllwlw | 837 | 603 | 234 | 0 | 107-55 | 6 | 64-34 |
| 1991 | Gotham City Ghosts | 101 | 61 | .623 | 12 |   | 8-2 | W7 | wwwwwwwlwl | 733 | 605 | 128 |   | 96-66 | 5 | 63-35 |
| 1991 | Winnipeg Goldeyes | 95 | 67 | .586 | 18 |   | 5-5 | W1 | wlwlllwwwl | 724 | 577 | 147 |   | 99-63 | -4 | 56-42 |
| 1991 | Topeka Tornados | 84 | 78 | .519 | 29 |   | 6-4 | L3 | lllwwwwwwl | 700 | 665 | 35 |   | 85-77 | -1 | 52-46 |
| 1991 | Carmel Crush | 84 | 78 | .519 | 29 |   | 8-2 | L1 | lwwwlwwwww | 684 | 710 | -26 |   | 78-84 | 6 | 50-48 |
| 1991 | Chicago Whales | 74 | 88 | .457 | 39 |   | 2-8 | W1 | wllllllllw | 645 | 720 | -75 |   | 72-90 | 2 | 41-57 |
| 1991 | Troy Trojans | 71 | 91 | .438 | 42 |   | 4-6 | L1 | lwlwwllllw | 778 | 834 | -56 |   | 75-87 | -4 | 38-60 |
| 1991 | Toledo Mud Hens | 56 | 106 | .346 | 57 |   | 2-8 | W1 | wllllwllll | 667 | 855 | -188 |   | 61-101 | -5 | 28-70 |
| Wildcard | ||||||||||||||
| Year | Team | W | L | Pct | GB | Strk | Pythag | Overall | PyPct | OvPct | PD | 1-run | Extra | Mgc |
| AL |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| 1991 | St Louis Perfectos | 89 | 73 | .549 | - | L3 | 84-78 | 89-73 | .520 | .549 | 5 | 26-21 | 12-4 | 1 |
| 1991 | Bloom County Losers | 89 | 73 | .549 | - | W4 | 97-65 | 89-73 | .597 | .549 | -8 | 24-31 | 4-13 | 1 |
| 1991 | Hanover-Horton Heffalumps | 84 | 78 | .519 | 5 | W1 | 85-77 | 84-78 | .522 | .519 | -1 | 16-24 | 7-6 |   |
| 1991 | Palos Hills Pit Vipers | 82 | 80 | .506 | 7 | L1 | 86-76 | 82-80 | .532 | .506 | -4 | 18-21 | 6-15 |   |
| 1991 | River City Rhinos | 78 | 84 | .481 | 11 | W1 | 78-84 | 78-84 | .481 | .481 | 0 | 23-27 | 7-9 |   |
| 1991 | Ilion Golden Bombers | 74 | 88 | .457 | 15 | L1 | 66-96 | 74-88 | .409 | .457 | 8 | 21-19 | 7-8 |   |
| 1991 | Boston Stranglers | 64 | 98 | .395 | 25 | L1 | 68-94 | 64-98 | .417 | .395 | -4 | 23-24 | 13-11 |   |
| 1991 | Pittsburgh SmokinBats | 58 | 104 | .358 | 31 | W1 | 63-99 | 58-104 | .389 | .358 | -5 | 14-29 | 8-8 |   |
|   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| NL |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| 1991 | Useless Bay Water Apes | 113 | 49 | .698 | na | L1 | 107-55 | 113-49 | .658 | .698 | 6 | 32-18 | 12-7 |   |
| 1991 | Gotham City Ghosts | 101 | 61 | .623 | - | W7 | 96-66 | 101-61 | .595 | .623 | 5 | 38-20 | 13-6 | 0 |
| 1991 | Winnipeg Goldeyes | 95 | 67 | .586 | 6 | W1 | 99-63 | 95-67 | .612 | .586 | -4 | 23-22 | 8-7 |   |
| 1991 | Topeka Tornados | 84 | 78 | .519 | 17 | L3 | 85-77 | 84-78 | .526 | .519 | -1 | 27-22 | 11-7 |   |
| 1991 | Carmel Crush | 84 | 78 | .519 | 17 | L1 | 78-84 | 84-78 | .481 | .519 | 6 | 32-20 | 14-8 |   |
| 1991 | Chicago Whales | 74 | 88 | .457 | 27 | W1 | 72-90 | 74-88 | .445 | .457 | 2 | 18-26 | 6-7 |   |
| 1991 | Troy Trojans | 71 | 91 | .438 | 30 | L1 | 75-87 | 71-91 | .465 | .438 | -4 | 21-19 | 8-8 |   |
| 1991 | Toledo Mud Hens | 56 | 106 | .346 | 45 | W1 | 61-101 | 56-106 | .378 | .346 | -5 | 18-31 | 5-17 |   |
| Expanded1 | |||||||||
| Year | Team | Home | Road | Grass | Turf | vsLHP | vsRHP | Div | InterLg |
| AL |   |   |   |   |   |   |   |   |   |
| 1991 | St Louis Perfectos | 52-29 | 37-44 | 25-31 | 64-42 | 27-26 | 62-47 | 55-43 | 34-30 |
| 1991 | Bloom County Losers | 52-29 | 37-44 | 74-56 | 15-17 | 27-20 | 62-53 | 62-36 | 27-37 |
| 1991 | Hanover-Horton Heffalumps | 46-35 | 38-43 | 69-61 | 15-17 | 25-24 | 59-54 | 49-49 | 35-29 |
| 1991 | Palos Hills Pit Vipers | 41-40 | 41-40 | 25-31 | 57-49 | 24-26 | 58-54 | 53-45 | 29-35 |
| 1991 | River City Rhinos | 47-34 | 31-50 | 66-64 | 12-20 | 21-29 | 57-55 | 42-56 | 36-28 |
| 1991 | Ilion Golden Bombers | 37-44 | 37-44 | 25-31 | 49-57 | 21-31 | 53-57 | 49-49 | 25-39 |
| 1991 | Boston Stranglers | 36-45 | 28-53 | 52-78 | 12-20 | 21-30 | 43-68 | 43-55 | 21-43 |
| 1991 | Pittsburgh SmokinBats | 35-46 | 23-58 | 13-43 | 45-61 | 19-34 | 39-70 | 39-59 | 19-45 |
|   |   |   |   |   |   |   |   |   |   |
| NL |   |   |   |   |   |   |   |   |   |
| 1991 | Useless Bay Water Apes | 59-22 | 54-27 | 97-42 | 16-7 | 33-17 | 80-32 | 64-34 | 49-15 |
| 1991 | Gotham City Ghosts | 49-32 | 52-29 | 82-57 | 19-4 | 30-19 | 71-42 | 63-35 | 38-26 |
| 1991 | Winnipeg Goldeyes | 55-26 | 40-41 | 81-58 | 14-9 | 35-21 | 60-46 | 56-42 | 39-25 |
| 1991 | Topeka Tornados | 47-34 | 37-44 | 72-67 | 12-11 | 27-24 | 57-54 | 52-46 | 32-32 |
| 1991 | Carmel Crush | 45-36 | 39-42 | 71-68 | 13-10 | 25-24 | 59-54 | 50-48 | 34-30 |
| 1991 | Chicago Whales | 41-40 | 33-48 | 62-77 | 12-11 | 33-30 | 41-58 | 41-57 | 33-31 |
| 1991 | Troy Trojans | 40-41 | 31-50 | 61-78 | 10-13 | 19-34 | 52-57 | 38-60 | 33-31 |
| 1991 | Toledo Mud Hens | 36-45 | 20-61 | 16-49 | 40-57 | 19-39 | 37-67 | 28-70 | 28-36 |
| Expanded2 | ||||||
| Year | Team | Lead7 | Tied7 | Trail7 | 1-run | Extra |
| AL |   |   |   |   |   |   |
| 1991 | St Louis Perfectos | 66-7 | 16-4 | 7-62 | 26-21 | 12-4 |
| 1991 | Bloom County Losers | 80-8 | 3-13 | 6-52 | 24-31 | 4-13 |
| 1991 | Hanover-Horton Heffalumps | 66-5 | 10-6 | 8-67 | 16-24 | 7-6 |
| 1991 | Palos Hills Pit Vipers | 66-9 | 10-7 | 6-64 | 18-21 | 6-15 |
| 1991 | River City Rhinos | 64-8 | 6-14 | 8-62 | 23-27 | 7-9 |
| 1991 | Ilion Golden Bombers | 51-4 | 17-10 | 6-74 | 21-19 | 7-8 |
| 1991 | Boston Stranglers | 45-7 | 14-13 | 5-78 | 23-24 | 13-11 |
| 1991 | Pittsburgh SmokinBats | 47-11 | 6-7 | 5-86 | 14-29 | 8-8 |
|   |   |   |   |   |   |   |
| NL |   |   |   |   |   |   |
| 1991 | Useless Bay Water Apes | 89-5 | 17-10 | 7-34 | 32-18 | 12-7 |
| 1991 | Gotham City Ghosts | 80-2 | 13-9 | 8-50 | 38-20 | 13-6 |
| 1991 | Winnipeg Goldeyes | 76-4 | 13-10 | 6-53 | 23-22 | 8-7 |
| 1991 | Topeka Tornados | 66-5 | 9-10 | 9-63 | 27-22 | 11-7 |
| 1991 | Carmel Crush | 67-8 | 11-6 | 6-64 | 32-20 | 14-8 |
| 1991 | Chicago Whales | 59-9 | 8-16 | 7-63 | 18-26 | 6-7 |
| 1991 | Troy Trojans | 55-9 | 7-12 | 9-70 | 21-19 | 8-8 |
| 1991 | Toledo Mud Hens | 44-6 | 8-21 | 4-79 | 18-31 | 5-17 |