ERA+
Zack Greinke · Season-by-season history
ERA+ over time
- Kansas City Royals · MLB
- Los Angeles Angels · MLB
- Houston Astros · MLB
| Season | Team | League | ERA+ |
|---|---|---|---|
| 2023 |  Kansas City Royals |
MLB | 88 |
| 2022 | Kansas City Royals |
MLB | 111 |
| 2021 |  Houston Astros |
MLB | 103 |
| 2020 | Houston Astros |
MLB | 110 |
| 2019 | Houston Astros |
MLB | 154 |
| 2012 |  Los Angeles Angels |
MLB | 108 |
| 2010 | Kansas City Royals |
MLB | 100 |
| 2009 | Kansas City Royals |
MLB | 205 |
| 2008 | Kansas City Royals |
MLB | 125 |
| 2007 | Kansas City Royals |
MLB | 124 |
| 2006 | Kansas City Royals |
MLB | 116 |
| 2005 | Kansas City Royals |
MLB | 76 |
| 2004 | Kansas City Royals |
MLB | 120 |