ERA+
Roy Halladay · Season-by-season history
ERA+ over time
- Toronto Blue Jays · MLB
| Season | Team | League | ERA+ |
|---|---|---|---|
| 2009 |  Toronto Blue Jays |
MLB | 159 |
| 2008 | Toronto Blue Jays |
MLB | 152 |
| 2007 | Toronto Blue Jays |
MLB | 121 |
| 2006 | Toronto Blue Jays |
MLB | 143 |
| 2005 | Toronto Blue Jays |
MLB | 185 |
| 2004 | Toronto Blue Jays |
MLB | 115 |
| 2003 | Toronto Blue Jays |
MLB | 145 |
| 2002 | Toronto Blue Jays |
MLB | 157 |
| 2001 | Toronto Blue Jays |
MLB | 145 |
| 2000 | Toronto Blue Jays |
MLB | 48 |
| 1999 | Toronto Blue Jays |
MLB | 125 |
| 1998 | Toronto Blue Jays |
MLB | 245 |