Bill James career ERA
3.20Career Regular Season
Bill James has a career ERA of 3.20 over 8 regular seasons.
- Best season on file: 2.09 in 1917.
- Most recent: 3.71 in 1919.
Average of 8 regular seasons, 1911 through 1919. 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. | ||
|---|---|---|---|---|---|---|---|---|---|---|
| 1911 |  CLE | 8 | 2 | 4 | 4.88 | 51.2 | 21 | 32 | 1.74 | 0 |
| 1912 | CLE | 3 | 0 | 0 | 4.61 | 13.2 | 5 | 9 | 1.76 | 0 |
| 1914 |  BAL | 44 | 15 | 14 | 2.85 | 284.0 | 109 | 109 | 1.33 | 1 |
| 1915 |  BAL/DET | 45 | 14 | 13 | 3.26 | 237.1 | 82 | 125 | 1.42 | 1 |
| 1916 | DET | 30 | 8 | 12 | 3.68 | 151.2 | 61 | 79 | 1.45 | 1 |
| 1917 | DET | 34 | 13 | 10 | 2.09 | 198.0 | 62 | 96 | 1.31 | 1 |
| 1918 | DET | 19 | 6 | 11 | 3.76 | 122.0 | 42 | 68 | 1.60 | 0 |
| 1919 |  DET/BOS/CHW | 20 | 7 | 7 | 3.71 | 121.1 | 26 | 60 | 1.52 | 0 |
What the columns mean: W · L · ERA · IP · K · BB · WHIP · SV