Research & Reports
Team Records
Cleveland Guardians : ERA
| Team | Season | ERA |
| Cleveland Guardians | 122 | 4.585 |
| Cleveland Guardians | 117 | 4.652 |
| Cleveland Guardians | 115 | 4.794 |
| Cleveland Guardians | 132 | 4.889 |
| Cleveland Guardians | 123 | 5.148 |
| Cleveland Guardians | 112 | 5.648 |
