Warren Hacker career ERA
4.21Career Regular Season
Warren Hacker has a career ERA of 4.21 over 12 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. | ||
|---|---|---|---|---|---|---|---|---|---|---|
| 1948 |  CHC | 3 | 0 | 1 | 21.00 | 3.0 | 0 | 3 | 3.33 | 0 |
| 1949 | CHC | 30 | 5 | 8 | 4.23 | 125.2 | 40 | 53 | 1.54 | 0 |
| 1950 | CHC | 5 | 0 | 1 | 5.28 | 15.1 | 5 | 8 | 1.83 | 1 |
| 1951 | CHC | 2 | 0 | 0 | 13.50 | 1.1 | 2 | 0 | 2.25 | 0 |
| 1952 | CHC | 33 | 15 | 9 | 2.58 | 185.0 | 84 | 31 | 0.95 | 1 |
| 1953 | CHC | 39 | 12 | 19 | 4.38 | 221.2 | 106 | 54 | 1.26 | 2 |
| 1954 | CHC | 39 | 6 | 13 | 4.25 | 158.2 | 80 | 37 | 1.22 | 2 |
| 1955 | CHC | 35 | 11 | 15 | 4.27 | 213.0 | 80 | 43 | 1.15 | 3 |
| 1956 | CHC | 34 | 3 | 13 | 4.66 | 168.0 | 65 | 44 | 1.39 | 0 |
| 1957 |  CIN/PHI | 35 | 7 | 6 | 4.76 | 117.1 | 51 | 31 | 1.30 | 0 |
| 1958 | PHI | 9 | 0 | 1 | 7.41 | 17.0 | 4 | 8 | 1.88 | 0 |
| 1961 |  CHW | 42 | 3 | 3 | 3.77 | 57.1 | 40 | 8 | 1.22 | 8 |
What the columns mean: W · L · ERA · IP · K · BB · WHIP · SV
- Best season on file: 2.58 in 1952.
- Most recent: 3.77 in 1961.
Figures come from ESPN's box scores and were last read on November 2, 2026.