Jason Johnson career ERA
4.99Career Regular Season
Jason Johnson has a career ERA of 4.99 over 11 regular seasons.
- Best season on file: 4.09 in 2001.
- Most recent: 5.22 in 2008.
Average of 11 regular seasons, 1997 through 2008. 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. | ||
|---|---|---|---|---|---|---|---|---|---|---|
| 1997 |  PIT | 3 | 0 | 0 | 6.00 | 6.0 | 3 | 1 | 1.83 | 0 |
| 1998 |  TB | 13 | 2 | 5 | 5.70 | 60.0 | 36 | 27 | 1.68 | 0 |
| 1999 |  BAL | 22 | 8 | 7 | 5.46 | 115.1 | 71 | 55 | 1.52 | 0 |
| 2000 | BAL | 25 | 1 | 10 | 7.02 | 107.2 | 79 | 61 | 1.67 | 0 |
| 2001 | BAL | 32 | 10 | 12 | 4.09 | 196.0 | 114 | 77 | 1.38 | 0 |
| 2002 | BAL | 22 | 5 | 14 | 4.59 | 131.1 | 97 | 41 | 1.39 | 0 |
| 2003 | BAL | 32 | 10 | 10 | 4.18 | 189.2 | 118 | 80 | 1.56 | 0 |
| 2004 |  DET | 33 | 8 | 15 | 5.13 | 196.2 | 125 | 60 | 1.43 | 0 |
| 2005 | DET | 33 | 8 | 13 | 4.54 | 210.0 | 93 | 49 | 1.34 | 0 |
| 2006 |  CLE/BOS/CIN | 24 | 3 | 12 | 6.10 | 115.0 | 54 | 35 | 1.70 | 0 |
| 2008 |  LAD | 16 | 1 | 2 | 5.22 | 29.1 | 20 | 12 | 1.50 | 0 |
What the columns mean: W · L · ERA · IP · K · BB · WHIP · SV