Olson (40-39 career win-loss mark) has earned a FIP of 3.64 and he has faced 2,889 hitters in the majors. His earned run average is 3.46 (258 earned runs allowed) and he has a WHIP of 1.381. He has conceded 598 base knocks (8.0 hits per 9 innings) and has had 330 free passes. Olson has thrown 672 innings and has earned 588 strikeouts during his MLB career.
Gregg Olson Stats
| Year | Team | G | IP | W | L | WHIP | ERA | H | BB | SO | FIP | SV | GS | HR | ER | R | BF | SO/W | H/9 | SO/9 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Career | 622 | 672.0 | 40 | 39 | 1.381 | 3.46 | 598 | 330 | 588 | 3.64 | 217 | 0 | 46 | 258 | 275 | 2,889 | 1.78 | 8.0 | 7.9 | |
| 2001 | LAD | 28 | 24.2 | 0 | 1 | 1.865 | 8.03 | 26 | 20 | 24 | 5.64 | 0 | 0 | 4 | 22 | 24 | 120 | 1.20 | 9.5 | 8.8 |
| 2000 | LAD | 13 | 17.2 | 0 | 1 | 1.585 | 5.09 | 21 | 7 | 15 | 5.74 | 0 | 0 | 4 | 10 | 11 | 81 | 2.14 | 10.7 | 7.6 |
| 1999 | ARI | 61 | 60.2 | 9 | 4 | 1.302 | 3.71 | 54 | 25 | 45 | 4.91 | 14 | 0 | 9 | 25 | 28 | 257 | 1.80 | 8.0 | 6.7 |
| 1998 | ARI | 64 | 68.2 | 3 | 4 | 1.180 | 3.01 | 56 | 25 | 55 | 3.43 | 30 | 0 | 4 | 23 | 25 | 281 | 2.20 | 7.3 | 7.2 |
| 1997 | TOT | 45 | 50.0 | 4 | 3 | 1.720 | 5.58 | 58 | 28 | 34 | 4.27 | 1 | 0 | 3 | 31 | 35 | 226 | 1.21 | 10.4 | 6.1 |
| 1997 | MIN | 11 | 8.1 | 0 | 0 | 3.600 | 18.36 | 19 | 11 | 6 | 5.63 | 0 | 0 | 0 | 17 | 17 | 55 | 0.55 | 20.5 | 6.5 |
| 1997 | KCR | 34 | 41.2 | 4 | 3 | 1.344 | 3.02 | 39 | 17 | 28 | 4.00 | 1 | 0 | 3 | 14 | 18 | 171 | 1.65 | 8.4 | 6.0 |
| 1996 | TOT | 52 | 52.1 | 4 | 0 | 1.720 | 4.99 | 55 | 35 | 37 | 5.56 | 8 | 0 | 7 | 29 | 30 | 243 | 1.06 | 9.5 | 6.4 |
| 1996 | DET | 43 | 43.0 | 3 | 0 | 1.651 | 5.02 | 43 | 28 | 29 | 5.66 | 8 | 0 | 6 | 24 | 25 | 196 | 1.04 | 9.0 | 6.1 |
| 1996 | HOU | 9 | 9.1 | 1 | 0 | 2.036 | 4.82 | 12 | 7 | 8 | 5.10 | 0 | 0 | 1 | 5 | 5 | 47 | 1.14 | 11.6 | 7.7 |
| 1995 | TOT | 23 | 33.0 | 3 | 3 | 1.424 | 4.09 | 28 | 19 | 21 | 5.13 | 3 | 0 | 4 | 15 | 15 | 141 | 1.11 | 7.6 | 5.7 |
| 1995 | CLE | 3 | 2.2 | 0 | 0 | 2.625 | 13.50 | 5 | 2 | 0 | 10.23 | 0 | 0 | 1 | 4 | 4 | 14 | 0.00 | 16.9 | 0.0 |
| 1995 | KCR | 20 | 30.1 | 3 | 3 | 1.319 | 3.26 | 23 | 17 | 21 | 4.69 | 3 | 0 | 3 | 11 | 11 | 127 | 1.24 | 6.8 | 6.2 |
| 1994 | ATL | 16 | 14.2 | 0 | 2 | 2.182 | 9.20 | 19 | 13 | 10 | 5.52 | 1 | 0 | 1 | 15 | 15 | 77 | 0.77 | 11.7 | 6.1 |
| 1993 | BAL | 50 | 45.0 | 0 | 2 | 1.222 | 1.60 | 37 | 18 | 44 | 2.52 | 29 | 0 | 1 | 8 | 9 | 188 | 2.44 | 7.4 | 8.8 |
| 1992 | BAL | 60 | 61.1 | 1 | 5 | 1.141 | 2.05 | 46 | 24 | 58 | 2.70 | 36 | 0 | 3 | 14 | 14 | 244 | 2.42 | 6.8 | 8.5 |
| 1991 | BAL | 72 | 73.2 | 4 | 6 | 1.398 | 3.18 | 74 | 29 | 72 | 2.30 | 31 | 0 | 1 | 26 | 28 | 319 | 2.48 | 9.0 | 8.8 |
| 1990 | BAL | 64 | 74.1 | 6 | 5 | 1.184 | 2.42 | 57 | 31 | 74 | 2.71 | 37 | 0 | 3 | 20 | 20 | 305 | 2.39 | 6.9 | 9.0 |
| 1989 | BAL | 64 | 85.0 | 5 | 2 | 1.212 | 1.69 | 57 | 46 | 90 | 2.46 | 27 | 0 | 1 | 16 | 17 | 356 | 1.96 | 6.0 | 9.5 |
| 1988 | BAL | 10 | 11.0 | 1 | 1 | 1.818 | 3.27 | 10 | 10 | 9 | 5.04 | 0 | 0 | 1 | 4 | 4 | 51 | 0.90 | 8.2 | 7.4 |