ERA+
James Paxton · Season-by-season history
ERA+ over time
- Seattle Mariners · MLB
- New York Yankees · MLB
- Boston Red Sox · MLB
| Season | Team | League | ERA+ |
|---|---|---|---|
| 2024 |  Boston Red Sox |
MLB | 105 |
| 2023 | Boston Red Sox |
MLB | 101 |
| 2021 |  Seattle Mariners |
MLB | 78 |
| 2020 |  New York Yankees |
MLB | 65 |
| 2019 | New York Yankees |
MLB | 116 |
| 2018 | Seattle Mariners |
MLB | 108 |
| 2017 | Seattle Mariners |
MLB | 140 |
| 2016 | Seattle Mariners |
MLB | 107 |
| 2015 | Seattle Mariners |
MLB | 98 |
| 2014 | Seattle Mariners |
MLB | 120 |
| 2013 | Seattle Mariners |
MLB | 249 |