ERA+
Mike Fiers · Season-by-season history
ERA+ over time
- Houston Astros · MLB
- Detroit Tigers · MLB
- Athletics · MLB
Hover over a bar for its value. Only numeric values with a recorded season are charted; missing seasons are not treated as zero.
| Season | Team | League | ERA+ |
|---|---|---|---|
| 2021 |  Athletics |
MLB | 55 |
| 2020 | Athletics |
MLB | 91 |
| 2019 | Athletics |
MLB | 110 |
| 2018 |  Detroit Tigers |
MLB | 129 |
| 2017 |  Houston Astros |
MLB | 78 |
| 2016 | Houston Astros |
MLB | 88 |
| 2015 | Houston Astros |
MLB | 118 |