Jamie Walker career ERA
4.13Career Regular Season
Jamie Walker has a career ERA of 4.13 over 10 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. | ||
|---|---|---|---|---|---|---|---|---|---|---|
| 1997 |  KC | 50 | 3 | 3 | 5.44 | 43.0 | 24 | 20 | 1.53 | 0 |
| 1998 | KC | 6 | 0 | 1 | 9.87 | 17.1 | 15 | 3 | 1.90 | 0 |
| 2002 |  DET | 57 | 1 | 1 | 3.71 | 43.2 | 40 | 9 | 0.94 | 1 |
| 2003 | DET | 78 | 4 | 3 | 3.32 | 65.0 | 45 | 17 | 1.20 | 3 |
| 2004 | DET | 70 | 3 | 4 | 3.20 | 64.2 | 53 | 12 | 1.25 | 1 |
| 2005 | DET | 66 | 4 | 3 | 3.70 | 48.2 | 30 | 13 | 1.27 | 0 |
| 2006 | DET | 56 | 0 | 1 | 2.81 | 48.0 | 37 | 8 | 1.15 | 0 |
| 2007 |  BAL | 81 | 3 | 2 | 3.23 | 61.1 | 41 | 17 | 1.21 | 7 |
| 2008 | BAL | 59 | 1 | 3 | 6.87 | 38.0 | 24 | 11 | 1.68 | 0 |
| 2009 | BAL | 22 | 0 | 0 | 5.11 | 12.1 | 9 | 0 | 1.54 | 0 |
What the columns mean: W · L · ERA · IP · K · BB · WHIP · SV
- Best season on file: 2.81 in 2006.
- Most recent: 5.11 in 2009.
Figures come from ESPN's box scores and were last read on November 2, 2026.