ERA+
Russ Swan · Season-by-season history
ERA+ over time
- Seattle Mariners · MLB
- Cleveland Guardians · 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+ |
|---|---|---|---|
| 1994 |  Cleveland Guardians |
MLB | 43 |
| 1993 |  Seattle Mariners |
MLB | 49 |
| 1992 | Seattle Mariners |
MLB | 84 |
| 1991 | Seattle Mariners |
MLB | 120 |
| 1990 | Seattle Mariners |
MLB | 109 |