Research & Reports
Team Records
Tulsa Ironmen : ERA
| Team | Season | ERA |
| Tulsa Ironmen | 121 | 3.540 |
| Tulsa Ironmen | 126 | 3.570 |
| Tulsa Ironmen | 122 | 3.603 |
| Tulsa Ironmen | 131 | 3.677 |
| Tulsa Ironmen | 125 | 3.698 |
| Tulsa Ironmen | 130 | 3.808 |
| Tulsa Ironmen | 124 | 3.855 |
| Tulsa Ironmen | 127 | 3.857 |
| Tulsa Ironmen | 120 | 4.100 |
| Tulsa Ironmen | 128 | 4.111 |
| Tulsa Ironmen | 119 | 4.112 |
| Tulsa Ironmen | 129 | 4.126 |
| Tulsa Ironmen | 123 | 4.276 |
| Tulsa Ironmen | 132 | 4.341 |
| Tulsa Ironmen | 118 | 4.669 |
