Jim O'toole career ERA
3.57Career Regular Season
Jim O'toole has a career ERA of 3.57 over 10 regular seasons.
- Best season on file: 1.29 in 1958.
- Most recent: 2.82 in 1967.
Average of 10 regular seasons, 1958 through 1967. 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. | ||
|---|---|---|---|---|---|---|---|---|---|---|
| 1958 |  CIN | 1 | 0 | 1 | 1.29 | 7.0 | 4 | 5 | 1.29 | 0 |
| 1959 | CIN | 28 | 5 | 8 | 5.15 | 129.1 | 68 | 73 | 1.68 | 0 |
| 1960 | CIN | 34 | 12 | 12 | 3.80 | 196.1 | 124 | 66 | 1.34 | 1 |
| 1961 | CIN | 39 | 19 | 9 | 3.10 | 252.2 | 178 | 93 | 1.27 | 2 |
| 1962 | CIN | 36 | 16 | 13 | 3.50 | 251.2 | 170 | 87 | 1.23 | 0 |
| 1963 | CIN | 33 | 17 | 14 | 2.88 | 234.1 | 146 | 57 | 1.13 | 0 |
| 1964 | CIN | 30 | 17 | 7 | 2.66 | 220.0 | 145 | 51 | 1.11 | 0 |
| 1965 | CIN | 29 | 3 | 10 | 5.92 | 127.2 | 71 | 47 | 1.57 | 1 |
| 1966 | CIN | 25 | 5 | 7 | 3.55 | 142.0 | 96 | 49 | 1.32 | 0 |
| 1967 |  CHW | 15 | 4 | 3 | 2.82 | 54.1 | 37 | 18 | 1.31 | 0 |
What the columns mean: W · L · ERA · IP · K · BB · WHIP · SV