Duke Esper career wins
101Career Regular Season
Duke Esper has recorded 101 wins over 9 regular seasons.
- Best season on file: 20 in 1891.
- Most recent: 3 in 1898.
Sum of 9 regular seasons, 1890 through 1898. Figures come from ESPN's box scores and were last read on September 23, 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. | ||
|---|---|---|---|---|---|---|---|---|---|---|
| 1890 |  PIT/PHI | 25 | 13 | 11 | 4.55 | 201.2 | 88 | 93 | 1.62 | 0 |
| 1891 | PHI | 39 | 20 | 15 | 3.56 | 296.0 | 108 | 121 | 1.43 | 1 |
| 1892 |  PHI/PIT | 24 | 13 | 6 | 3.63 | 178.2 | 50 | 70 | 1.45 | 1 |
| 1893 | — | 42 | 12 | 28 | 4.71 | 334.1 | 78 | 156 | 1.79 | 0 |
| 1894 | — | 34 | 15 | 12 | 5.81 | 217.0 | 49 | 75 | 1.65 | 2 |
| 1895 | — | 34 | 10 | 12 | 3.92 | 218.1 | 39 | 79 | 1.50 | 1 |
| 1896 | — | 20 | 14 | 5 | 3.58 | 155.2 | 19 | 39 | 1.33 | 0 |
| 1897 |  STL | 8 | 1 | 6 | 5.28 | 61.1 | 8 | 12 | 1.74 | 0 |
| 1898 | STL | 10 | 3 | 5 | 5.98 | 64.2 | 14 | 22 | 1.67 | 0 |
What the columns mean: W · L · ERA · IP · K · BB · WHIP · SV