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| Name | Given Name | Age | Birthday | Height | Weight | Birth City | Birth Country | Batting Hand | Throwing Hand |
|---|---|---|---|---|---|---|---|---|---|
| Duke Esper | Charles H. | 43 Deceased | 07/28/1867 | 6'11" | 185 lbs | Salem | L |
| Year | Team | Games | At Bats | Hits | Home Runs | RBI | Batting AVG | Wins | Losses | Strikeouts | Shutouts | Position | Errors | Double Plays | Assists |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1890 | Philadelphia Athletics | 18 | 61 | 18 | 0 | 11 | 0.2951 | 8 | 9 | 61 | 1 | Pitcher | 2 | 2 | 34 |
| 1890 | Philadelphia Phillies | 2 | 7 | 1 | 0 | 0 | 0.1429 | 0 | 2 | 9 | 0 | Pitcher | 0 | 0 | 3 |
| 1890 | Pittsburg Alleghenys | 5 | 19 | 3 | 0 | 2 | 0.1579 | 5 | 0 | 18 | 0 | Pitcher | 1 | 1 | 9 |
| 1891 | Philadelphia Phillies | 39 | 123 | 27 | 0 | 9 | 0.2195 | 20 | 15 | 108 | 1 | Pitcher | 4 | 2 | 67 |
| 1892 | Philadelphia Phillies | 21 | 70 | 17 | 1 | 11 | 0.2429 | 11 | 6 | 45 | 0 | Outfield | 0 | 0 | 1 |
| 1892 | Pittsburgh Pirates | 3 | 9 | 0 | 0 | 1 | 0.0000 | 2 | 0 | 5 | 0 | Pitcher | 1 | 1 | 33 |
| 1893 | Washington Senators | 42 | 143 | 41 | 0 | 24 | 0.2867 | 12 | 28 | 78 | 0 | Pitcher | 0 | 0 | 3 |
| 1894 | Baltimore Orioles | 18 | 54 | 14 | 1 | 4 | 0.2593 | 5 | 10 | 24 | 0 | Pitcher | 9 | 0 | 79 |
| 1894 | Washington Senators | 16 | 45 | 10 | 0 | 6 | 0.2222 | 10 | 2 | 25 | 0 | Outfield | 0 | 0 | 0 |
| 1895 | Baltimore Orioles | 34 | 90 | 16 | 0 | 2 | 0.1778 | 10 | 12 | 39 | 1 | Pitcher | 1 | 1 | 21 |
| 1896 | Baltimore Orioles | 20 | 66 | 13 | 0 | 5 | 0.1970 | 14 | 5 | 19 | 1 | Pitcher | 0 | 1 | 21 |
| 1897 | St. Louis Browns | 8 | 25 | 8 | 0 | 3 | 0.3200 | 1 | 6 | 8 | 0 | Pitcher | 6 | 0 | 43 |
| 1898 | St. Louis Browns | 10 | 27 | 10 | 0 | 5 | 0.3704 | 3 | 5 | 14 | 0 | Pitcher | 1 | 0 | 32 |