ERA
Bobby Ayala · Season-by-season history
ERA over time
- Seattle Mariners · MLB
Hover over a bar for its value. Only numeric values with a recorded season are charted; missing seasons are not treated as zero.
| Season | Team | League | ERA |
|---|---|---|---|
| 1998 |  Seattle Mariners |
MLB | 7.29 |
| 1997 | Seattle Mariners |
MLB | 3.82 |
| 1996 | Seattle Mariners |
MLB | 5.88 |
| 1995 | Seattle Mariners |
MLB | 4.44 |
| 1994 | Seattle Mariners |
MLB | 2.86 |