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 | 4.65 |
| 2008 | Cleveland Guardians |
MLB | 3.12 |
| 2007 | Cleveland Guardians |
MLB | 4.32 |
| 2006 | Cleveland Guardians |
MLB | 4.17 |
| 2005 | Cleveland Guardians |
MLB | 4.49 |
| 2004 | Cleveland Guardians |
MLB | 3.38 |
| 2003 | Cleveland Guardians |
MLB | 4.33 |
| 2002 | Cleveland Guardians |
MLB | 5.83 |
| 2001 | Cleveland Guardians |
MLB | 5.85 |
| 2000 |  New York Yankees |
MLB | 13.50 |