ERA+
Oliver Perez · Season-by-season history
ERA+ over time
- Seattle Mariners · MLB
- Houston Astros · MLB
- Cleveland Guardians · 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+ |
|---|---|---|---|
| 2020 |  Cleveland Guardians |
MLB | 226 |
| 2019 | Cleveland Guardians |
MLB | 119 |
| 2018 | Cleveland Guardians |
MLB | 313 |
| 2015 |  Houston Astros |
MLB | 60 |
| 2013 |  Seattle Mariners |
MLB | 99 |
| 2012 | Seattle Mariners |
MLB | 181 |