Gregg Olson career ERA
3.46Career Regular Season
Gregg Olson has a career ERA of 3.46 over 14 regular seasons.
- Best season on file: 1.60 in 1993.
- Most recent: 8.03 in 2001.
Figures come from ESPN's box scores and were last read on September 22, 2026.
| 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. | ||
|---|---|---|---|---|---|---|---|---|---|---|
| 1988 |  BAL | 10 | 1 | 1 | 3.27 | 11.0 | 9 | 10 | 1.82 | 0 |
| 1989 | BAL | 64 | 5 | 2 | 1.69 | 85.0 | 90 | 46 | 1.21 | 27 |
| 1990 | BAL | 64 | 6 | 5 | 2.42 | 74.1 | 74 | 31 | 1.18 | 37 |
| 1991 | BAL | 72 | 4 | 6 | 3.18 | 73.2 | 72 | 29 | 1.40 | 31 |
| 1992 | BAL | 60 | 1 | 5 | 2.05 | 61.1 | 58 | 24 | 1.14 | 36 |
| 1993 | BAL | 50 | 0 | 2 | 1.60 | 45.0 | 44 | 18 | 1.22 | 29 |
| 1994 |  ATL | 16 | 0 | 2 | 9.20 | 14.2 | 10 | 13 | 2.18 | 1 |
| 1995 |  CLE/KC | 23 | 3 | 3 | 4.09 | 33.0 | 21 | 19 | 1.42 | 3 |
| 1996 |  DET/HOU | 52 | 4 | 0 | 4.99 | 52.1 | 37 | 35 | 1.72 | 8 |
| 1997 |  KC/MIN | 45 | 4 | 3 | 5.58 | 50.0 | 34 | 28 | 1.72 | 1 |
| 1998 |  ARI | 64 | 3 | 4 | 3.01 | 68.2 | 55 | 25 | 1.18 | 30 |
| 1999 | ARI | 61 | 9 | 4 | 3.71 | 60.2 | 45 | 25 | 1.30 | 14 |
| 2000 |  LAD | 13 | 0 | 1 | 5.09 | 17.2 | 15 | 7 | 1.58 | 0 |
| 2001 | LAD | 28 | 0 | 1 | 8.03 | 24.2 | 24 | 20 | 1.86 | 0 |
What the columns mean: W · L · ERA · IP · K · BB · WHIP · SV