League standings -- American League
Regular season
| Divisional |
| Year | Team | W | L | Pct | GB | | L10 | Strk | Recent | RF | RA | Mgn | Mgc |
| 1988 | Bloomington Hoosiers | 80 | 28 | .741 | - |   | 6-4 | W4 | wwwwlwllwl | 624 | 331 | 293 | 42 |
| 1988 | Dayton Triangles | 61 | 41 | .598 | 16 |   | 6-4 | L1 | lwlwwwwlwl | 461 | 401 | 60 | 74 |
| 1988 | Frankfort Tigers | 62 | 46 | .574 | 18 |   | 5-5 | W1 | wlllwwlwlw | 484 | 453 | 31 | 73 |
| 1988 | Indy Alley Cats | 56 | 52 | .519 | 24 |   | 5-5 | L3 | lllwwlwwlw | 488 | 499 | -11 | 79 |
| 1988 | Rockford Forest Citys | 54 | 54 | .500 | 26 |   | 6-4 | W5 | wwwwwllwll | 538 | 539 | -1 | 81 |
| 1988 | Cleveland Spiders | 53 | 55 | .491 | 27 |   | 3-7 | L4 | llllwlwlwl | 411 | 453 | -42 | 82 |
| 1988 | Collierstown Highlanders | 52 | 56 | .481 | 28 |   | 7-3 | W3 | wwwllwwlww | 494 | 491 | 3 | 83 |
| 1988 | Cuyahoga River Flames | 50 | 58 | .463 | 30 |   | 7-3 | W1 | wlwlwwwwwl | 444 | 526 | -82 | 85 |
| 1988 | Hatteras Pelicans | 49 | 59 | .454 | 31 |   | 5-5 | L1 | lwlwllwwlw | 441 | 514 | -73 | 86 |
| 1988 | Carolina Bandits | 47 | 61 | .435 | 33 |   | 4-6 | L1 | lwwwllllwl | 485 | 520 | -35 | 88 |
| 1988 | Evanston Black Sox | 35 | 73 | .324 | 45 |   | 2-8 | L5 | lllllwlllw | 380 | 591 | -211 | 100 |
| Wildcard |
| Year | Team | W | L | Pct | GB | | L10 | Strk | Recent | Mgc |
| 1988 | Bloomington Hoosiers | 80 | 28 | .741 | na |   | 6-4 | W4 | wwwwlwllwl |   |
| 1988 | Dayton Triangles | 61 | 41 | .598 | - |   | 6-4 | L1 | lwlwwwwlwl | 56 |
| 1988 | Frankfort Tigers | 62 | 46 | .574 | 2 |   | 5-5 | W1 | wlllwwlwlw | 60 |
| 1988 | Indy Alley Cats | 56 | 52 | .519 | 8 |   | 5-5 | L3 | lllwwlwwlw | 66 |
| 1988 | Rockford Forest Citys | 54 | 54 | .500 | 10 |   | 6-4 | W5 | wwwwwllwll | 68 |
| 1988 | Cleveland Spiders | 53 | 55 | .491 | 11 |   | 3-7 | L4 | llllwlwlwl | 69 |
| 1988 | Collierstown Highlanders | 52 | 56 | .481 | 12 |   | 7-3 | W3 | wwwllwwlww | 70 |
| 1988 | Cuyahoga River Flames | 50 | 58 | .463 | 14 |   | 7-3 | W1 | wlwlwwwwwl | 72 |
| 1988 | Hatteras Pelicans | 49 | 59 | .454 | 15 |   | 5-5 | L1 | lwlwllwwlw | 73 |
| 1988 | Carolina Bandits | 47 | 61 | .435 | 17 |   | 4-6 | L1 | lwwwllllwl | 75 |
| 1988 | Evanston Black Sox | 35 | 73 | .324 | 29 |   | 2-8 | L5 | lllllwlllw | 87 |
| Expanded1 |
| Year | Team | Home | Road | Grass | Turf | vsLHP | vsRHP | Div | InterLg |
| 1988 | Bloomington Hoosiers | 40-11 | 40-17 | 60-16 | 20-12 | 29-5 | 51-23 | 48-18 | 32-10 |
| 1988 | Dayton Triangles | 31-20 | 30-21 | 18-12 | 43-29 | 25-11 | 36-30 | 36-24 | 25-17 |
| 1988 | Frankfort Tigers | 38-19 | 24-27 | 56-39 | 6-7 | 14-19 | 48-27 | 36-30 | 26-16 |
| 1988 | Indy Alley Cats | 34-23 | 22-29 | 46-43 | 10-9 | 13-14 | 43-38 | 37-29 | 19-23 |
| 1988 | Rockford Forest Citys | 32-25 | 22-29 | 46-36 | 8-18 | 11-18 | 43-36 | 37-29 | 17-25 |
| 1988 | Cleveland Spiders | 31-32 | 22-23 | 45-49 | 8-6 | 15-15 | 38-40 | 28-38 | 25-17 |
| 1988 | Collierstown Highlanders | 23-22 | 29-34 | 26-24 | 26-32 | 9-23 | 43-33 | 35-31 | 17-25 |
| 1988 | Cuyahoga River Flames | 29-22 | 21-36 | 43-45 | 7-13 | 12-18 | 38-40 | 31-35 | 19-23 |
| 1988 | Hatteras Pelicans | 24-27 | 25-32 | 18-20 | 31-39 | 13-14 | 36-45 | 31-35 | 18-24 |
| 1988 | Carolina Bandits | 24-33 | 23-28 | 43-58 | 4-3 | 19-14 | 28-47 | 20-46 | 27-15 |
| 1988 | Evanston Black Sox | 23-28 | 12-45 | 28-54 | 7-19 | 10-16 | 25-57 | 21-45 | 14-28 |
| Expanded2 |
| Year | Team | Lead7 | Tied7 | Trail7 | 1-run | Extra |
| 1988 | Bloomington Hoosiers | 65-8 | 9-2 | 6-18 | 16-16 | 9-3 |
| 1988 | Dayton Triangles | 49-4 | 6-11 | 6-26 | 19-18 | 5-7 |
| 1988 | Frankfort Tigers | 51-8 | 6-5 | 5-33 | 25-14 | 5-0 |
| 1988 | Indy Alley Cats | 46-6 | 5-5 | 5-41 | 25-14 | 5-7 |
| 1988 | Rockford Forest Citys | 44-2 | 3-9 | 7-43 | 12-14 | 4-4 |
| 1988 | Cleveland Spiders | 38-4 | 11-11 | 4-40 | 25-23 | 5-6 |
| 1988 | Collierstown Highlanders | 34-3 | 10-8 | 8-45 | 18-21 | 9-4 |
| 1988 | Cuyahoga River Flames | 36-4 | 8-4 | 6-50 | 18-12 | 8-1 |
| 1988 | Hatteras Pelicans | 34-6 | 11-3 | 4-50 | 15-16 | 5-4 |
| 1988 | Carolina Bandits | 35-11 | 7-4 | 5-46 | 18-21 | 8-9 |
| 1988 | Evanston Black Sox | 23-5 | 8-7 | 4-61 | 15-19 | 5-10 |