Research & Reports
Team Records
Portland Otters : ERA
| Team | Season | ERA |
| Portland Otters | 120 | 3.429 |
| Portland Otters | 116 | 3.482 |
| Portland Otters | 123 | 3.563 |
| Portland Otters | 118 | 3.570 |
| Portland Otters | 127 | 3.646 |
| Portland Otters | 119 | 3.936 |
| Portland Otters | 125 | 3.944 |
| Portland Otters | 130 | 3.946 |
| Portland Otters | 117 | 4.177 |
| Portland Otters | 124 | 4.197 |
| Portland Otters | 126 | 4.207 |
| Portland Otters | 129 | 4.291 |
| Portland Otters | 132 | 4.670 |
| Portland Otters | 122 | 4.772 |
| Portland Otters | 128 | 4.909 |
| Portland Otters | 121 | 4.921 |
| Portland Otters | 131 | 5.026 |
