ERA
Rich Hill · Season-by-season history
ERA over time
- Baltimore Orioles · MLB
- Boston Red Sox · MLB
- Cleveland Guardians · MLB
- New York Yankees · MLB
- Athletics · MLB
- Minnesota Twins · MLB
- Tampa Bay Rays · 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 | 5.00 |
| 2024 |  Boston Red Sox |
MLB | 4.91 |
| 2022 | Boston Red Sox |
MLB | 4.27 |
| 2021 |  Tampa Bay Rays |
MLB | 3.87 |
| 2020 |  Minnesota Twins |
MLB | 3.03 |
| 2016 |  Athletics |
MLB | 2.25 |
| 2015 | Boston Red Sox |
MLB | 1.55 |
| 2014 |  New York Yankees |
MLB | 1.69 |
| 2013 |  Cleveland Guardians |
MLB | 6.28 |
| 2012 | Boston Red Sox |
MLB | 1.83 |
| 2011 | Boston Red Sox |
MLB | 0.00 |
| 2010 | Boston Red Sox |
MLB | 0.00 |
| 2009 |  Baltimore Orioles |
MLB | 7.80 |