League standings -- American League
Regular season
| Divisional |
| Year | Team | W | L | Pct | GB | | L10 | Strk | Recent | RF | RA | Mgn | Mgc |
| 1988 | Bloomington Hoosiers | 117 | 39 | .750 | - |   | 5-5 | L4 | llllwwwlww | 878 | 463 | 415 | 0 |
| 1988 | Frankfort Tigers | 92 | 70 | .568 | 28 |   | 7-3 | W4 | wwwwllwlww | 780 | 719 | 61 |   |
| 1988 | Dayton Triangles | 87 | 69 | .558 | 30 |   | 4-6 | L4 | llllwwlwlw | 698 | 648 | 50 |   |
| 1988 | Rockford Forest Citys | 86 | 70 | .551 | 31 |   | 7-3 | W4 | wwwwlllwww | 804 | 751 | 53 |   |
| 1988 | Indy Alley Cats | 80 | 76 | .513 | 37 |   | 6-4 | W2 | wwllwwwlwl | 742 | 747 | -5 |   |
| 1988 | Cleveland Spiders | 76 | 80 | .487 | 41 |   | 3-7 | L2 | llwwllwlll | 597 | 682 | -85 |   |
| 1988 | Cuyahoga River Flames | 73 | 83 | .468 | 44 |   | 4-6 | W1 | wlwllwlwll | 668 | 763 | -95 |   |
| 1988 | Hatteras Pelicans | 71 | 85 | .455 | 46 |   | 5-5 | L1 | lwllllwwww | 667 | 767 | -100 |   |
| 1988 | Collierstown Highlanders | 70 | 86 | .449 | 47 |   | 5-5 | L1 | lwlwwlwllw | 732 | 725 | 7 |   |
| 1988 | Carolina Bandits | 70 | 86 | .449 | 47 |   | 8-2 | W6 | wwwwwwlwwl | 697 | 728 | -31 |   |
| 1988 | Evanston Black Sox | 47 | 109 | .301 | 70 |   | 0-10 | L12 | llllllllll | 532 | 870 | -338 |   |
| Wildcard |
| Year | Team | W | L | Pct | GB | | L10 | Strk | Recent | Mgc |
| 1988 | Bloomington Hoosiers | 117 | 39 | .750 | na |   | 5-5 | L4 | llllwwwlww |   |
| 1988 | Frankfort Tigers | 92 | 70 | .568 | - |   | 7-3 | W4 | wwwwllwlww | 2 |
| 1988 | Dayton Triangles | 87 | 69 | .558 | 2 |   | 4-6 | L4 | llllwwlwlw | 6 |
| 1988 | Rockford Forest Citys | 86 | 70 | .551 | 3 |   | 7-3 | W4 | wwwwlllwww | 8 |
| 1988 | Indy Alley Cats | 80 | 76 | .513 | 9 |   | 6-4 | W2 | wwllwwwlwl |   |
| 1988 | Cleveland Spiders | 76 | 80 | .487 | 13 |   | 3-7 | L2 | llwwllwlll |   |
| 1988 | Cuyahoga River Flames | 73 | 83 | .468 | 16 |   | 4-6 | W1 | wlwllwlwll |   |
| 1988 | Hatteras Pelicans | 71 | 85 | .455 | 18 |   | 5-5 | L1 | lwllllwwww |   |
| 1988 | Collierstown Highlanders | 70 | 86 | .449 | 19 |   | 5-5 | L1 | lwlwwlwllw |   |
| 1988 | Carolina Bandits | 70 | 86 | .449 | 19 |   | 8-2 | W6 | wwwwwwlwwl |   |
| 1988 | Evanston Black Sox | 47 | 109 | .301 | 42 |   | 0-10 | L12 | llllllllll |   |
| Expanded1 |
| Year | Team | Home | Road | Grass | Turf | vsLHP | vsRHP | Div | InterLg |
| 1988 | Bloomington Hoosiers | 61-20 | 56-19 | 97-27 | 20-12 | 32-7 | 85-32 | 85-29 | 32-10 |
| 1988 | Frankfort Tigers | 52-29 | 40-41 | 77-60 | 15-10 | 20-27 | 72-43 | 66-54 | 26-16 |
| 1988 | Dayton Triangles | 45-30 | 42-39 | 25-23 | 62-46 | 30-16 | 57-53 | 62-52 | 25-17 |
| 1988 | Rockford Forest Citys | 45-30 | 41-40 | 75-49 | 11-21 | 18-21 | 68-49 | 69-45 | 17-25 |
| 1988 | Indy Alley Cats | 44-31 | 36-45 | 67-64 | 13-12 | 16-21 | 64-55 | 61-53 | 19-23 |
| 1988 | Cleveland Spiders | 42-39 | 34-41 | 62-68 | 14-12 | 19-18 | 57-62 | 51-63 | 25-17 |
| 1988 | Cuyahoga River Flames | 45-36 | 28-47 | 60-64 | 13-19 | 18-22 | 55-61 | 54-60 | 19-23 |
| 1988 | Hatteras Pelicans | 37-38 | 34-47 | 27-35 | 44-50 | 18-24 | 53-61 | 53-61 | 18-24 |
| 1988 | Collierstown Highlanders | 37-44 | 33-42 | 27-29 | 43-57 | 17-29 | 53-57 | 53-61 | 17-25 |
| 1988 | Carolina Bandits | 39-42 | 31-44 | 62-75 | 8-11 | 24-21 | 46-65 | 43-71 | 27-15 |
| 1988 | Evanston Black Sox | 30-45 | 17-64 | 36-88 | 11-21 | 11-26 | 36-83 | 33-81 | 14-28 |
| Expanded2 |
| Year | Team | Lead7 | Tied7 | Trail7 | 1-run | Extra |
| 1988 | Bloomington Hoosiers | 97-10 | 13-5 | 7-24 | 26-20 | 10-5 |
| 1988 | Frankfort Tigers | 77-9 | 8-5 | 7-56 | 31-20 | 5-0 |
| 1988 | Dayton Triangles | 70-4 | 10-13 | 7-52 | 25-27 | 8-7 |
| 1988 | Rockford Forest Citys | 66-3 | 9-11 | 11-56 | 24-17 | 10-5 |
| 1988 | Indy Alley Cats | 66-6 | 7-9 | 7-61 | 31-19 | 7-8 |
| 1988 | Cleveland Spiders | 57-10 | 13-12 | 6-58 | 37-32 | 6-7 |
| 1988 | Cuyahoga River Flames | 55-5 | 9-7 | 9-71 | 22-23 | 10-6 |
| 1988 | Hatteras Pelicans | 51-7 | 15-6 | 5-72 | 22-24 | 7-5 |
| 1988 | Collierstown Highlanders | 51-6 | 11-14 | 8-66 | 21-28 | 9-8 |
| 1988 | Carolina Bandits | 53-14 | 9-9 | 8-63 | 24-28 | 9-11 |
| 1988 | Evanston Black Sox | 34-6 | 9-7 | 4-96 | 20-27 | 5-11 |