John Johnstone career ERA
4.01Career Regular Season
John Johnstone has a career ERA of 4.01 over 8 regular seasons.
- Best season on file: 2.60 in 1999.
- Most recent: 6.30 in 2000.
Figures come from ESPN's box scores and were last read on September 21, 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. | ||
|---|---|---|---|---|---|---|---|---|---|---|
| 1993 |  MIA | 7 | 0 | 2 | 5.91 | 10.2 | 5 | 7 | 2.16 | 0 |
| 1994 | MIA | 17 | 1 | 2 | 5.91 | 21.1 | 23 | 16 | 1.83 | 0 |
| 1995 | MIA | 4 | 0 | 0 | 3.86 | 4.2 | 3 | 2 | 1.93 | 0 |
| 1996 |  HOU | 9 | 1 | 0 | 5.54 | 13.0 | 5 | 5 | 1.69 | 0 |
| 1997 |  ATH/SF | 18 | 0 | 0 | 3.24 | 25.0 | 19 | 14 | 1.44 | 0 |
| 1998 | SF | 70 | 6 | 5 | 3.07 | 88.0 | 86 | 38 | 1.25 | 0 |
| 1999 | SF | 62 | 4 | 6 | 2.60 | 65.2 | 56 | 20 | 1.04 | 3 |
| 2000 | SF | 47 | 3 | 4 | 6.30 | 50.0 | 37 | 13 | 1.54 | 0 |
What the columns mean: W · L · ERA · IP · K · BB · WHIP · SV