ERA+
Colby Lewis · Season-by-season history
ERA+ over time
- Texas Rangers · MLB
- Detroit Tigers · MLB
- Athletics · MLB
| Season | Team | League | ERA+ |
|---|---|---|---|
| 2016 |  Texas Rangers |
MLB | 123 |
| 2015 | Texas Rangers |
MLB | 91 |
| 2014 | Texas Rangers |
MLB | 77 |
| 2012 | Texas Rangers |
MLB | 128 |
| 2011 | Texas Rangers |
MLB | 100 |
| 2010 | Texas Rangers |
MLB | 121 |
| 2007 |  Athletics |
MLB | 66 |
| 2006 |  Detroit Tigers |
MLB | 168 |
| 2004 | Texas Rangers |
MLB | 124 |
| 2003 | Texas Rangers |
MLB | 69 |
| 2002 | Texas Rangers |
MLB | 76 |