Jon Matlack career ERA
3.18Career Regular Season
Jon Matlack has a career ERA of 3.18 over 13 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. | ||
|---|---|---|---|---|---|---|---|---|---|---|
| 1971 |  NYM | 7 | 0 | 3 | 4.14 | 37.0 | 24 | 15 | 1.24 | 0 |
| 1972 | NYM | 34 | 15 | 10 | 2.32 | 244.0 | 169 | 71 | 1.17 | 0 |
| 1973 | NYM | 34 | 14 | 16 | 3.20 | 242.0 | 205 | 99 | 1.28 | 0 |
| 1974 | NYM | 34 | 13 | 15 | 2.41 | 265.1 | 195 | 76 | 1.12 | 0 |
| 1975 | NYM | 33 | 16 | 12 | 3.38 | 228.2 | 154 | 58 | 1.23 | 0 |
| 1976 | NYM | 35 | 17 | 10 | 2.95 | 262.0 | 153 | 57 | 1.12 | 0 |
| 1977 | NYM | 26 | 7 | 15 | 4.21 | 169.0 | 123 | 43 | 1.29 | 0 |
| 1978 |  TEX | 35 | 15 | 13 | 2.27 | 270.0 | 157 | 51 | 1.12 | 1 |
| 1979 | TEX | 13 | 5 | 4 | 4.13 | 85.0 | 35 | 15 | 1.33 | 0 |
| 1980 | TEX | 35 | 10 | 10 | 3.68 | 234.2 | 142 | 48 | 1.33 | 1 |
| 1981 | TEX | 17 | 4 | 7 | 4.14 | 104.1 | 43 | 41 | 1.36 | 0 |
| 1982 | TEX | 33 | 7 | 7 | 3.53 | 147.2 | 78 | 37 | 1.32 | 1 |
| 1983 | TEX | 25 | 2 | 4 | 4.66 | 73.1 | 38 | 27 | 1.60 | 0 |
What the columns mean: W · L · ERA · IP · K · BB · WHIP · SV
- Best season on file: 2.27 in 1978.
- Most recent: 4.66 in 1983.
Average of 13 regular seasons, 1971 through 1983. Figures come from ESPN's box scores and were last read on October 31, 2026.