ERA+
Cliff Lee · Season-by-season history
ERA+ over time
- Cleveland Guardians · MLB
- Seattle Mariners · MLB
| Season | Team | League | ERA+ |
|---|---|---|---|
| 2010 |  Seattle Mariners |
MLB | 168 |
| 2009 |  Cleveland Guardians |
MLB | 135 |
| 2008 | Cleveland Guardians |
MLB | 167 |
| 2007 | Cleveland Guardians |
MLB | 72 |
| 2006 | Cleveland Guardians |
MLB | 102 |
| 2005 | Cleveland Guardians |
MLB | 111 |
| 2004 | Cleveland Guardians |
MLB | 80 |
| 2003 | Cleveland Guardians |
MLB | 122 |
| 2002 | Cleveland Guardians |
MLB | 260 |