League standings -- American League
Regular season
| Divisional |
| Year | Team | W | L | Pct | GB | | L10 | Strk | Recent | RF | RA | Mgn | Mgc |
| 1989 | Rockford Forest Citys | 13 | 8 | .619 | - |   | 6-4 | L1 | lwlwwllwww | 91 | 87 | 4 | 142 |
| 1989 | Bloomington Hoosiers | 13 | 8 | .619 | - |   | 6-4 | L1 | lwlwlwwwwl | 96 | 89 | 7 | 142 |
| 1989 | Hatteras Pelicans | 13 | 8 | .619 | - |   | 6-4 | L1 | lwwllwwwlw | 81 | 78 | 3 | 142 |
| 1989 | Indy Alley Cats | 12 | 9 | .571 | 1 |   | 7-3 | W1 | wlwlwwlwww | 81 | 84 | -3 | 143 |
| 1989 | Seattle Rainiers | 11 | 10 | .524 | 2 |   | 4-6 | L2 | llwwlwlwll | 110 | 84 | 26 | 144 |
| 1989 | Evanston Black Sox | 10 | 11 | .476 | 3 |   | 6-4 | W1 | wlwwlwwwll | 83 | 114 | -31 | 145 |
| 1989 | Chanute Owls | 10 | 11 | .476 | 3 |   | 3-7 | L2 | llwwllwlll | 86 | 85 | 1 | 145 |
| 1989 | Frankfort Tigers | 9 | 12 | .429 | 4 |   | 4-6 | L2 | llwllllwww | 105 | 111 | -6 | 146 |
| 1989 | Birmingham Barons | 7 | 14 | .333 | 6 |   | 3-7 | L3 | lllwllllww | 89 | 104 | -15 | 148 |
| 1989 | Collierstown Highlanders | 6 | 15 | .286 | 7 |   | 3-7 | W1 | wllwlllllw | 75 | 114 | -39 | 149 |
| 1989 | Dayton Triangles | 5 | 16 | .238 | 8 |   | 1-9 | W1 | wlllllllll | 72 | 105 | -33 | 150 |
| Wildcard |
| Year | Team | W | L | Pct | GB | | L10 | Strk | Recent | Mgc |
| 1989 | Rockford Forest Citys | 13 | 8 | .619 | - |   | 6-4 | L1 | lwlwwllwww | 142 |
| 1989 | Bloomington Hoosiers | 13 | 8 | .619 | - |   | 6-4 | L1 | lwlwlwwwwl | 142 |
| 1989 | Hatteras Pelicans | 13 | 8 | .619 | - |   | 6-4 | L1 | lwwllwwwlw | 142 |
| 1989 | Indy Alley Cats | 12 | 9 | .571 | 1 |   | 7-3 | W1 | wlwlwwlwww | 143 |
| 1989 | Seattle Rainiers | 11 | 10 | .524 | 2 |   | 4-6 | L2 | llwwlwlwll | 144 |
| 1989 | Evanston Black Sox | 10 | 11 | .476 | 3 |   | 6-4 | W1 | wlwwlwwwll | 145 |
| 1989 | Chanute Owls | 10 | 11 | .476 | 3 |   | 3-7 | L2 | llwwllwlll | 145 |
| 1989 | Frankfort Tigers | 9 | 12 | .429 | 4 |   | 4-6 | L2 | llwllllwww | 146 |
| 1989 | Birmingham Barons | 7 | 14 | .333 | 6 |   | 3-7 | L3 | lllwllllww | 148 |
| 1989 | Collierstown Highlanders | 6 | 15 | .286 | 7 |   | 3-7 | W1 | wllwlllllw | 149 |
| 1989 | Dayton Triangles | 5 | 16 | .238 | 8 |   | 1-9 | W1 | wlllllllll | 150 |
| Expanded1 |
| Year | Team | Home | Road | Grass | Turf | vsLHP | vsRHP | Div | InterLg |
| 1989 | Rockford Forest Citys | 6-1 | 7-7 | 10-4 | 3-4 | 7-2 | 6-6 |   | 13-8 |
| 1989 | Bloomington Hoosiers | 5-2 | 8-6 | 9-5 | 4-3 | 7-4 | 6-4 |   | 13-8 |
| 1989 | Hatteras Pelicans | 6-1 | 7-7 | 7-7 | 6-1 | 7-5 | 6-3 |   | 13-8 |
| 1989 | Indy Alley Cats | 6-1 | 6-8 | 10-4 | 2-5 | 11-4 | 1-5 |   | 12-9 |
| 1989 | Seattle Rainiers | 2-5 | 9-5 | 11-10 |   | 7-5 | 4-5 |   | 11-10 |
| 1989 | Evanston Black Sox | 2-5 | 8-6 | 2-5 | 8-6 | 3-3 | 7-8 |   | 10-11 |
| 1989 | Chanute Owls | 4-3 | 6-8 | 4-3 | 6-8 | 3-6 | 7-5 |   | 10-11 |
| 1989 | Frankfort Tigers | 6-1 | 3-11 | 6-1 | 3-11 | 4-2 | 5-10 |   | 9-12 |
| 1989 | Birmingham Barons | 4-3 | 3-11 | 6-8 | 1-6 | 4-1 | 3-13 |   | 7-14 |
| 1989 | Collierstown Highlanders | 3-4 | 3-11 | 2-5 | 4-10 | 4-9 | 2-6 |   | 6-15 |
| 1989 | Dayton Triangles | 0-7 | 5-9 | 1-6 | 4-10 | 3-2 | 2-14 |   | 5-16 |
| Expanded2 |
| Year | Team | Lead7 | Tied7 | Trail7 | 1-run | Extra |
| 1989 | Rockford Forest Citys | 9-0 | 2-2 | 2-6 | 5-2 | 1-1 |
| 1989 | Bloomington Hoosiers | 10-0 | 1-2 | 2-6 | 7-4 | 3-1 |
| 1989 | Hatteras Pelicans | 11-0 | 1-0 | 1-8 | 3-1 | 1-0 |
| 1989 | Indy Alley Cats | 9-0 | 1-2 | 2-7 | 5-4 | 1-1 |
| 1989 | Seattle Rainiers | 9-1 | 2-4 | 0-5 | 2-4 | 0-4 |
| 1989 | Evanston Black Sox | 8-0 | 2-1 | 0-10 | 4-0 | 2-0 |
| 1989 | Chanute Owls | 9-0 | 1-2 | 0-9 | 2-2 | 1-2 |
| 1989 | Frankfort Tigers | 9-1 |   | 0-11 | 2-3 | 1-0 |
| 1989 | Birmingham Barons | 6-3 | 1-2 | 0-9 | 2-2 | 1-3 |
| 1989 | Collierstown Highlanders | 6-3 |   | 0-12 | 2-6 | 0-4 |
| 1989 | Dayton Triangles | 5-2 | 0-3 | 0-11 | 0-4 | 0-2 |