ERA+
Jake Westbrook · Season-by-season history
ERA+ over time
- New York Yankees · MLB
- Cleveland Guardians · MLB
| Season | Team | League | ERA+ |
|---|---|---|---|
| 2010 |  Cleveland Guardians |
MLB | 85 |
| 2008 | Cleveland Guardians |
MLB | 137 |
| 2007 | Cleveland Guardians |
MLB | 105 |
| 2006 | Cleveland Guardians |
MLB | 107 |
| 2005 | Cleveland Guardians |
MLB | 93 |
| 2004 | Cleveland Guardians |
MLB | 129 |
| 2003 | Cleveland Guardians |
MLB | 102 |
| 2002 | Cleveland Guardians |
MLB | 76 |
| 2001 | Cleveland Guardians |
MLB | 77 |
| 2000 |  New York Yankees |
MLB | 37 |