Jack Hamilton career ERA
4.53Career Regular Season
Jack Hamilton has a career ERA of 4.53 over 8 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. | ||
|---|---|---|---|---|---|---|---|---|---|---|
| 1962 |  PHI | 41 | 9 | 12 | 5.09 | 182.0 | 101 | 107 | 1.60 | 2 |
| 1963 | PHI | 19 | 2 | 1 | 5.40 | 30.0 | 23 | 17 | 1.30 | 1 |
| 1964 |  DET | 5 | 0 | 1 | 8.40 | 15.0 | 5 | 8 | 2.13 | 0 |
| 1965 | DET | 4 | 1 | 1 | 14.54 | 4.1 | 3 | 4 | 2.31 | 0 |
| 1966 |  NYM | 57 | 6 | 13 | 3.93 | 148.2 | 93 | 88 | 1.52 | 13 |
| 1967 |  NYM/LAA | 43 | 11 | 6 | 3.35 | 150.2 | 96 | 79 | 1.37 | 1 |
| 1968 | LAA | 21 | 3 | 1 | 3.32 | 38.0 | 18 | 15 | 1.29 | 2 |
| 1969 |  CHW/CLE | 28 | 0 | 5 | 6.49 | 43.0 | 18 | 30 | 2.09 | 1 |
What the columns mean: W · L · ERA · IP · K · BB · WHIP · SV
- Best season on file: 3.32 in 1968.
- Most recent: 6.49 in 1969.
Figures come from ESPN's box scores and were last read on October 25, 2026.