ERA+
Shigetoshi Hasegawa · Season-by-season history
ERA+ over time
- Los Angeles Angels · MLB
- Seattle Mariners · MLB
| Season | Team | League | ERA+ |
|---|---|---|---|
| 2005 |  Seattle Mariners |
MLB | 101 |
| 2004 | Seattle Mariners |
MLB | 88 |
| 2003 | Seattle Mariners |
MLB | 292 |
| 2002 | Seattle Mariners |
MLB | 133 |
| 2001 |  Los Angeles Angels |
MLB | 112 |
| 2000 | Los Angeles Angels |
MLB | 145 |
| 1999 | Los Angeles Angels |
MLB | 99 |
| 1998 | Los Angeles Angels |
MLB | 152 |
| 1997 | Los Angeles Angels |
MLB | 119 |