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| First Name | Last Name | Given Name | Birth Year | Birth Month | Birth Day | Birth City | Birth Country | Height | Weight | Age | Bats | Throws |
| Harry | Steinfeldt | Harry M. | 1877 | 9 | 29 | St. Louis | USA | 69 | 180 | 36 | R | R |
| Year | Team | AB | HR | RBI | BA |
|---|---|---|---|---|---|
| 1898 | Cincinnati Reds | 308 | 0 | 43 | 0.2955 |
| 1899 | Cincinnati Reds | 386 | 0 | 43 | 0.2435 |
| 1900 | Cincinnati Reds | 510 | 2 | 66 | 0.2451 |
| 1901 | Cincinnati Reds | 382 | 6 | 47 | 0.2487 |
| 1902 | Cincinnati Reds | 479 | 1 | 49 | 0.2777 |
| 1903 | Cincinnati Reds | 439 | 6 | 83 | 0.3121 |
| 1904 | Cincinnati Reds | 349 | 1 | 52 | 0.2436 |
| 1905 | Cincinnati Reds | 384 | 1 | 39 | 0.2708 |
| 1906 | Chicago Cubs | 539 | 3 | 83 | 0.3265 |
| 1907 | Chicago Cubs | 542 | 1 | 70 | 0.2657 |
| 1908 | Chicago Cubs | 539 | 1 | 62 | 0.2412 |
| 1909 | Chicago Cubs | 528 | 2 | 59 | 0.2519 |
| 1910 | Chicago Cubs | 448 | 2 | 58 | 0.2522 |
| 1911 | Boston Rustlers | 63 | 1 | 8 | 0.2540 |
| Year | Team | W | L | G | SHO |
|---|---|---|---|---|---|
| 1898 | Cincinnati Reds | 0 | 0 | 0 | 0 |
| 1899 | Cincinnati Reds | 0 | 0 | 0 | 0 |
| 1900 | Cincinnati Reds | 0 | 0 | 0 | 0 |
| 1901 | Cincinnati Reds | 0 | 0 | 0 | 0 |
| 1902 | Cincinnati Reds | 0 | 0 | 0 | 0 |
| 1903 | Cincinnati Reds | 0 | 0 | 0 | 0 |
| 1904 | Cincinnati Reds | 0 | 0 | 0 | 0 |
| 1905 | Cincinnati Reds | 0 | 0 | 0 | 0 |
| 1906 | Chicago Cubs | 0 | 0 | 0 | 0 |
| 1907 | Chicago Cubs | 0 | 0 | 0 | 0 |
| 1908 | Chicago Cubs | 0 | 0 | 0 | 0 |
| 1909 | Chicago Cubs | 0 | 0 | 0 | 0 |
| 1910 | Chicago Cubs | 0 | 0 | 0 | 0 |
| 1911 | Boston Rustlers | 0 | 0 | 0 | 0 |
| Year | Team | POS | E | DP | A |
|---|---|---|---|---|---|
| 1898 | Cincinnati Reds | 1B | 1 | 2 | 2 |
| 1898 | Cincinnati Reds | 2B | 14 | 11 | 87 |
| 1898 | Cincinnati Reds | 3B | 13 | 3 | 49 |
| 1898 | Cincinnati Reds | OF | 8 | 0 | 5 |
| 1898 | Cincinnati Reds | SS | 5 | 1 | 15 |
| 1899 | Cincinnati Reds | 2B | 13 | 13 | 111 |
| 1899 | Cincinnati Reds | 3B | 28 | 4 | 128 |
| 1899 | Cincinnati Reds | OF | 0 | 0 | 0 |
| 1899 | Cincinnati Reds | SS | 4 | 2 | 23 |
| 1900 | Cincinnati Reds | 2B | 24 | 41 | 217 |
| 1900 | Cincinnati Reds | 3B | 24 | 11 | 175 |
| 1900 | Cincinnati Reds | OF | 0 | 0 | 0 |
| 1900 | Cincinnati Reds | SS | 0 | 0 | 11 |
| 1901 | Cincinnati Reds | 2B | 18 | 23 | 142 |
| 1901 | Cincinnati Reds | 3B | 24 | 5 | 127 |
| 1902 | Cincinnati Reds | 3B | 49 | 29 | 315 |
| 1902 | Cincinnati Reds | OF | 1 | 1 | 1 |
| 1903 | Cincinnati Reds | 3B | 25 | 11 | 212 |
| 1903 | Cincinnati Reds | SS | 10 | 1 | 49 |
| 1904 | Cincinnati Reds | 3B | 41 | 13 | 168 |
| 1905 | Cincinnati Reds | 1B | 0 | 0 | 0 |
| 1905 | Cincinnati Reds | 2B | 0 | 0 | 2 |
| 1905 | Cincinnati Reds | 3B | 33 | 16 | 221 |
| 1905 | Cincinnati Reds | OF | 0 | 0 | 0 |
| 1906 | Chicago Cubs | 2B | 0 | 0 | 1 |
| 1906 | Chicago Cubs | 3B | 20 | 13 | 253 |
| 1907 | Chicago Cubs | 3B | 16 | 18 | 307 |
| 1908 | Chicago Cubs | 3B | 28 | 15 | 275 |
| 1909 | Chicago Cubs | 3B | 31 | 16 | 299 |
| 1910 | Chicago Cubs | 3B | 22 | 16 | 246 |
| 1911 | Boston Rustlers | 3B | 11 | 2 | 24 |