Jeff Kaiser career ERA
9.17Career Regular Season
Jeff Kaiser has a career ERA of 9.17 over 7 regular seasons.
| GP: Games the player appeared in, however briefly. | W: Games in which this pitcher was credited with the win. | L: Games in which this pitcher was charged with the loss. | ERA: Earned runs allowed per nine innings pitched — lower is better. Under 3.00 is excellent. | IP: Innings pitched. The decimal counts outs, so 6.2 is six innings and two more outs. | K: Batters this pitcher struck out. | BB: Times the batter reached first base on four balls. | WHIP: Walks and hits allowed per inning pitched — lower is better. Around 1.00 is elite. | SV: Games finished by protecting a narrow lead to the last out. | ||
|---|---|---|---|---|---|---|---|---|---|---|
| 1985 |  ATH | 15 | 0 | 0 | 14.58 | 16.2 | 10 | 20 | 2.70 | 0 |
| 1987 |  CLE | 2 | 0 | 0 | 16.20 | 3.1 | 2 | 3 | 2.10 | 0 |
| 1988 | CLE | 3 | 0 | 0 | 0.00 | 2.2 | 0 | 1 | 1.13 | 0 |
| 1989 | CLE | 6 | 0 | 1 | 7.36 | 3.2 | 4 | 5 | 2.73 | 0 |
| 1990 | CLE | 5 | 0 | 0 | 3.55 | 12.2 | 9 | 7 | 1.82 | 0 |
| 1991 |  DET | 10 | 0 | 1 | 9.00 | 5.0 | 4 | 5 | 2.20 | 2 |
| 1993 |  CIN/NYM | 9 | 0 | 0 | 7.88 | 8.0 | 9 | 5 | 1.88 | 0 |
What the columns mean: W · L · ERA · IP · K · BB · WHIP · SV
- Best season on file: 0.00 in 1988.
- Most recent: 7.88 in 1993.
Figures come from ESPN's box scores and were last read on November 3, 2026.