Bill Dinneen career ERA
3.01Career Regular Season
Bill Dinneen has a career ERA of 3.01 over 12 regular seasons.
- Best season on file: 2.10 in 1908.
- Most recent: 3.46 in 1909.
Average of 12 regular seasons, 1898 through 1909. Figures come from ESPN's box scores and were last read on September 22, 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. | ||
|---|---|---|---|---|---|---|---|---|---|---|
| 1898 | — | 29 | 9 | 16 | 4.00 | 218.1 | 83 | 88 | 1.49 | 0 |
| 1899 | — | 37 | 14 | 20 | 3.93 | 291.0 | 91 | 106 | 1.57 | 0 |
| 1900 |  ATL | 40 | 20 | 14 | 3.12 | 320.2 | 107 | 105 | 1.28 | 0 |
| 1901 | ATL | 37 | 15 | 18 | 2.94 | 309.1 | 141 | 77 | 1.20 | 0 |
| 1902 |  BOS | 42 | 21 | 21 | 2.93 | 371.1 | 136 | 99 | 1.20 | 0 |
| 1903 | BOS | 37 | 21 | 13 | 2.26 | 299.0 | 148 | 66 | 1.07 | 2 |
| 1904 | BOS | 37 | 23 | 14 | 2.20 | 335.2 | 153 | 63 | 1.03 | 0 |
| 1905 | BOS | 31 | 12 | 14 | 3.73 | 243.2 | 97 | 50 | 1.17 | 1 |
| 1906 | BOS | 28 | 8 | 19 | 2.92 | 218.2 | 60 | 52 | 1.19 | 0 |
| 1907 |  BOS/BAL | 29 | 7 | 14 | 2.92 | 188.0 | 46 | 41 | 1.26 | 4 |
| 1908 | BAL | 27 | 14 | 7 | 2.10 | 167.0 | 39 | 53 | 1.11 | 0 |
| 1909 | BAL | 17 | 6 | 7 | 3.46 | 112.0 | 26 | 29 | 1.26 | 0 |
What the columns mean: W · L · ERA · IP · K · BB · WHIP · SV