ERA+
Bruce Chen · Season-by-season history
ERA+ over time
- Boston Red Sox · MLB
- Baltimore Orioles · MLB
- Texas Rangers · MLB
- Kansas City Royals · MLB
- Cleveland Guardians · MLB
| Season | Team | League | ERA+ |
|---|---|---|---|
| 2015 |  Cleveland Guardians |
MLB | 35 |
| 2014 |  Kansas City Royals |
MLB | 53 |
| 2013 | Kansas City Royals |
MLB | 126 |
| 2012 | Kansas City Royals |
MLB | 82 |
| 2011 | Kansas City Royals |
MLB | 108 |
| 2010 | Kansas City Royals |
MLB | 101 |
| 2009 | Kansas City Royals |
MLB | 77 |
| 2007 |  Texas Rangers |
MLB | 65 |
| 2006 |  Baltimore Orioles |
MLB | 65 |
| 2005 | Baltimore Orioles |
MLB | 113 |
| 2004 | Baltimore Orioles |
MLB | 151 |
| 2003 |  Boston Red Sox |
MLB | 94 |