ERA+
Michael Wacha · Season-by-season history
ERA+ over time
- Tampa Bay Rays · MLB
- Boston Red Sox · MLB
- Kansas City Royals · MLB
Hover over a point for its value. Only numeric values with a recorded season are charted; missing seasons are not treated as zero.
| Season | Team | League | ERA+ |
|---|---|---|---|
| 2025 |  Kansas City Royals |
MLB | 106 |
| 2024 | Kansas City Royals |
MLB | 123 |
| 2022 |  Boston Red Sox |
MLB | 127 |
| 2021 |  Tampa Bay Rays |
MLB | 80 |