Research & Reports
Team Records
Houston Astros : ERA
| Team | Season | ERA |
| Houston Astros | 107 | 4.074 |
| Houston Astros | 110 | 4.384 |
| Houston Astros | 105 | 4.416 |
| Houston Astros | 103 | 4.448 |
| Houston Astros | 104 | 4.625 |
| Houston Astros | 109 | 4.737 |
| Houston Astros | 108 | 4.859 |
| Houston Astros | 106 | 5.267 |
