ERA+
Jason Vargas · Season-by-season history
ERA+ over time
- Seattle Mariners · MLB
- Los Angeles Angels · MLB
- Kansas City Royals · MLB
| Season | Team | League | ERA+ |
|---|---|---|---|
| 2017 |  Kansas City Royals |
MLB | 108 |
| 2016 | Kansas City Royals |
MLB | 196 |
| 2015 | Kansas City Royals |
MLB | 106 |
| 2014 | Kansas City Royals |
MLB | 106 |
| 2013 |  Los Angeles Angels |
MLB | 94 |
| 2012 |  Seattle Mariners |
MLB | 99 |
| 2011 | Seattle Mariners |
MLB | 88 |
| 2010 | Seattle Mariners |
MLB | 104 |
| 2009 | Seattle Mariners |
MLB | 87 |