| Divisional | ||||||||||||||||
| Year | Team | W | L | Pct | GB | L10 | Strk | Recent | RF | RA | Mgn | Mgc | Pythag | PD | Div | |
| AL-LSL |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| 1966 | St Louis Perfectos | 108 | 54 | .667 | - |   | 6-4 | L1 | lwlwlwwlww | 656 | 474 | 182 | 0 | 106-56 | 2 | 62-36 |
| 1966 | Delaware Desperados | 94 | 68 | .580 | 14 |   | 8-2 | W1 | wlwwwwlwww | 766 | 641 | 125 |   | 95-67 | -1 | 59-39 |
| 1966 | River City Rhinos | 92 | 70 | .568 | 16 |   | 6-4 | L3 | lllwwwwwwl | 645 | 550 | 95 |   | 94-68 | -2 | 59-39 |
| 1966 | Ilion Golden Bombers | 82 | 80 | .506 | 26 |   | 6-4 | W3 | wwwlwlwwll | 693 | 723 | -30 |   | 78-84 | 4 | 47-51 |
| 1966 | Boston Stranglers | 81 | 81 | .500 | 27 |   | 2-8 | L2 | llwlllllwl | 553 | 595 | -42 |   | 75-87 | 6 | 48-50 |
| 1966 | Pittsburgh SmokinBats | 77 | 85 | .475 | 31 |   | 5-5 | L1 | lwllwwwllw | 629 | 636 | -7 |   | 80-82 | -3 | 40-58 |
| 1966 | Los Angeles Kings | 72 | 90 | .444 | 36 |   | 4-6 | W1 | wlwllllwlw | 582 | 634 | -52 |   | 74-88 | -2 | 43-55 |
| 1966 | Hanover-Horton Heffalumps | 64 | 98 | .395 | 44 |   | 3-7 | W2 | wwlwllllll | 605 | 717 | -112 |   | 67-95 | -3 | 34-64 |
|   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| NL-LSL |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| 1966 | Topeka Tornados | 93 | 69 | .574 | - |   | 9-1 | W3 | wwwlwwwwww | 682 | 551 | 131 | 0 | 98-64 | -5 | 62-36 |
| 1966 | Albuquerque Ruff Riders | 90 | 72 | .556 | 3 |   | 6-4 | L1 | lwwwllwwlw | 707 | 695 | 12 |   | 82-80 | 8 | 58-40 |
| 1966 | Toledo Mud Hens | 88 | 74 | .543 | 5 |   | 5-5 | W2 | wwllwwlwll | 763 | 703 | 60 |   | 88-74 | 0 | 55-43 |
| 1966 | Santa Fe Gamblers | 84 | 78 | .519 | 9 |   | 1-9 | W1 | wlllllllll | 758 | 707 | 51 |   | 87-75 | -3 | 54-44 |
| 1966 | Carmel Crush | 84 | 78 | .519 | 9 |   | 5-5 | W4 | wwwwllwlll | 781 | 764 | 17 |   | 83-79 | 1 | 45-53 |
| 1966 | Chicago Whales | 78 | 84 | .481 | 15 |   | 6-4 | L3 | lllwwwwlww | 651 | 702 | -51 |   | 75-87 | 3 | 45-53 |
| 1966 | Tennessee Smokies | 64 | 98 | .395 | 29 |   | 6-4 | L2 | llwwlwlwww | 631 | 763 | -132 |   | 66-96 | -2 | 44-54 |
| 1966 | Rhode Island Rats | 45 | 117 | .278 | 48 |   | 2-8 | L4 | llllwlllwl | 460 | 707 | -247 |   | 48-114 | -3 | 29-69 |
| Wildcard | ||||||||||||||
| Year | Team | W | L | Pct | GB | Strk | Pythag | Overall | PyPct | OvPct | PD | 1-run | Extra | Mgc |
| AL-LSL |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| 1966 | St Louis Perfectos | 108 | 54 | .667 | na | L1 | 106-56 | 108-54 | .657 | .667 | 2 | 37-24 | 12-7 |   |
| 1966 | Delaware Desperados | 94 | 68 | .580 | - | W1 | 95-67 | 94-68 | .588 | .580 | -1 | 25-17 | 10-4 | 0 |
| 1966 | River City Rhinos | 92 | 70 | .568 | 2 | L3 | 94-68 | 92-70 | .579 | .568 | -2 | 27-26 | 4-9 |   |
| 1966 | Ilion Golden Bombers | 82 | 80 | .506 | 12 | W3 | 78-84 | 82-80 | .479 | .506 | 4 | 30-25 | 10-6 |   |
| 1966 | Boston Stranglers | 81 | 81 | .500 | 13 | L2 | 75-87 | 81-81 | .463 | .500 | 6 | 34-27 | 13-12 |   |
| 1966 | Pittsburgh SmokinBats | 77 | 85 | .475 | 17 | L1 | 80-82 | 77-85 | .494 | .475 | -3 | 27-32 | 12-13 |   |
| 1966 | Los Angeles Kings | 72 | 90 | .444 | 22 | W1 | 74-88 | 72-90 | .457 | .444 | -2 | 23-30 | 6-7 |   |
| 1966 | Hanover-Horton Heffalumps | 64 | 98 | .395 | 30 | W2 | 67-95 | 64-98 | .416 | .395 | -3 | 21-29 | 5-15 |   |
|   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| NL-LSL |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| 1966 | Topeka Tornados | 93 | 69 | .574 | na | W3 | 98-64 | 93-69 | .605 | .574 | -5 | 25-32 | 12-12 |   |
| 1966 | Albuquerque Ruff Riders | 90 | 72 | .556 | - | L1 | 82-80 | 90-72 | .509 | .556 | 8 | 35-23 | 9-12 | 0 |
| 1966 | Toledo Mud Hens | 88 | 74 | .543 | 2 | W2 | 88-74 | 88-74 | .541 | .543 | 0 | 25-22 | 13-11 |   |
| 1966 | Santa Fe Gamblers | 84 | 78 | .519 | 6 | W1 | 87-75 | 84-78 | .535 | .519 | -3 | 21-24 | 8-6 |   |
| 1966 | Carmel Crush | 84 | 78 | .519 | 6 | W4 | 83-79 | 84-78 | .511 | .519 | 1 | 31-26 | 11-7 |   |
| 1966 | Chicago Whales | 78 | 84 | .481 | 12 | L3 | 75-87 | 78-84 | .462 | .481 | 3 | 22-28 | 10-11 |   |
| 1966 | Tennessee Smokies | 64 | 98 | .395 | 26 | L2 | 66-96 | 64-98 | .406 | .395 | -2 | 26-26 | 7-11 |   |
| 1966 | Rhode Island Rats | 45 | 117 | .278 | 45 | L4 | 48-114 | 45-117 | .297 | .278 | -3 | 15-33 | 8-7 |   |
| Expanded1 | |||||||||
| Year | Team | Home | Road | Grass | Turf | vsLHP | vsRHP | Div | InterLg |
| AL-LSL |   |   |   |   |   |   |   |   |   |
| 1966 | St Louis Perfectos | 56-25 | 52-29 | 108-54 |   | 36-16 | 72-38 | 62-36 | 46-18 |
| 1966 | Delaware Desperados | 48-33 | 46-35 | 94-68 |   | 26-30 | 68-38 | 59-39 | 35-29 |
| 1966 | River City Rhinos | 49-32 | 43-38 | 92-70 |   | 43-20 | 49-50 | 59-39 | 33-31 |
| 1966 | Ilion Golden Bombers | 45-36 | 37-44 | 82-80 |   | 32-29 | 50-51 | 47-51 | 35-29 |
| 1966 | Boston Stranglers | 45-36 | 36-45 | 81-81 |   | 27-26 | 54-55 | 48-50 | 33-31 |
| 1966 | Pittsburgh SmokinBats | 46-35 | 31-50 | 77-85 |   | 24-28 | 53-57 | 40-58 | 37-27 |
| 1966 | Los Angeles Kings | 37-44 | 35-46 | 72-90 |   | 27-28 | 45-62 | 43-55 | 29-35 |
| 1966 | Hanover-Horton Heffalumps | 36-45 | 28-53 | 64-98 |   | 26-28 | 38-70 | 34-64 | 30-34 |
|   |   |   |   |   |   |   |   |   |   |
| NL-LSL |   |   |   |   |   |   |   |   |   |
| 1966 | Topeka Tornados | 46-35 | 47-34 | 93-69 |   | 39-19 | 54-50 | 62-36 | 31-33 |
| 1966 | Albuquerque Ruff Riders | 44-37 | 46-35 | 90-72 |   | 30-21 | 60-51 | 58-40 | 32-32 |
| 1966 | Toledo Mud Hens | 47-34 | 41-40 | 88-74 |   | 40-22 | 48-52 | 55-43 | 33-31 |
| 1966 | Santa Fe Gamblers | 45-36 | 39-42 | 84-78 |   | 35-26 | 49-52 | 54-44 | 30-34 |
| 1966 | Carmel Crush | 49-32 | 35-46 | 84-78 |   | 35-26 | 49-52 | 45-53 | 39-25 |
| 1966 | Chicago Whales | 41-40 | 37-44 | 78-84 |   | 36-33 | 42-51 | 45-53 | 33-31 |
| 1966 | Tennessee Smokies | 34-47 | 30-51 | 64-98 |   | 22-40 | 42-58 | 44-54 | 20-44 |
| 1966 | Rhode Island Rats | 21-60 | 24-57 | 45-117 |   | 16-35 | 29-82 | 29-69 | 16-48 |
| Expanded2 | ||||||
| Year | Team | Lead7 | Tied7 | Trail7 | 1-run | Extra |
| AL-LSL |   |   |   |   |   |   |
| 1966 | St Louis Perfectos | 87-4 | 11-9 | 10-41 | 37-24 | 12-7 |
| 1966 | Delaware Desperados | 74-4 | 16-12 | 4-52 | 25-17 | 10-4 |
| 1966 | River City Rhinos | 81-4 | 9-14 | 2-52 | 27-26 | 4-9 |
| 1966 | Ilion Golden Bombers | 61-8 | 11-6 | 10-66 | 30-25 | 10-6 |
| 1966 | Boston Stranglers | 50-8 | 22-8 | 9-65 | 34-27 | 13-12 |
| 1966 | Pittsburgh SmokinBats | 66-5 | 4-14 | 7-66 | 27-32 | 12-13 |
| 1966 | Los Angeles Kings | 57-10 | 9-9 | 6-71 | 23-30 | 6-7 |
| 1966 | Hanover-Horton Heffalumps | 43-8 | 9-17 | 12-73 | 21-29 | 5-15 |
|   |   |   |   |   |   |   |
| NL-LSL |   |   |   |   |   |   |
| 1966 | Topeka Tornados | 72-9 | 15-16 | 6-44 | 25-32 | 12-12 |
| 1966 | Albuquerque Ruff Riders | 65-10 | 11-7 | 14-55 | 35-23 | 9-12 |
| 1966 | Toledo Mud Hens | 70-4 | 12-9 | 6-61 | 25-22 | 13-11 |
| 1966 | Santa Fe Gamblers | 68-14 | 11-8 | 5-56 | 21-24 | 8-6 |
| 1966 | Carmel Crush | 63-6 | 12-9 | 9-63 | 31-26 | 11-7 |
| 1966 | Chicago Whales | 66-4 | 7-12 | 5-68 | 22-28 | 10-11 |
| 1966 | Tennessee Smokies | 44-10 | 12-15 | 8-73 | 26-26 | 7-11 |
| 1966 | Rhode Island Rats | 34-7 | 9-15 | 2-95 | 15-33 | 8-7 |