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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 |
| Tommy | Leach | Thomas William | 1877 | 11 | 4 | French Creek | USA | 66 | 150 | 91 | R | R |
| Year | Team | AB | HR | RBI | BA |
|---|---|---|---|---|---|
| 1898 | Louisville Colonels | 10 | 0 | 0 | 0.1000 |
| 1899 | Louisville Colonels | 406 | 5 | 57 | 0.2882 |
| 1900 | Pittsburgh Pirates | 160 | 1 | 16 | 0.2125 |
| 1901 | Pittsburgh Pirates | 374 | 2 | 44 | 0.3048 |
| 1902 | Pittsburgh Pirates | 514 | 6 | 85 | 0.2782 |
| 1903 | Pittsburgh Pirates | 507 | 7 | 87 | 0.2978 |
| 1904 | Pittsburgh Pirates | 579 | 2 | 56 | 0.2573 |
| 1905 | Pittsburgh Pirates | 499 | 2 | 53 | 0.2565 |
| 1906 | Pittsburgh Pirates | 476 | 1 | 39 | 0.2857 |
| 1907 | Pittsburgh Pirates | 547 | 4 | 43 | 0.3035 |
| 1908 | Pittsburgh Pirates | 583 | 5 | 41 | 0.2590 |
| 1909 | Pittsburgh Pirates | 587 | 6 | 43 | 0.2606 |
| 1910 | Pittsburgh Pirates | 529 | 4 | 52 | 0.2703 |
| 1911 | Pittsburgh Pirates | 386 | 3 | 43 | 0.2383 |
| 1912 | Chicago Cubs | 265 | 2 | 32 | 0.2415 |
| 1912 | Pittsburgh Pirates | 97 | 0 | 19 | 0.2990 |
| 1913 | Chicago Cubs | 456 | 6 | 32 | 0.2873 |
| 1914 | Chicago Cubs | 577 | 7 | 46 | 0.2634 |
| 1915 | Cincinnati Reds | 335 | 0 | 17 | 0.2239 |
| 1918 | Pittsburgh Pirates | 72 | 0 | 5 | 0.1944 |
| Year | Team | W | L | G | SHO |
|---|---|---|---|---|---|
| 1898 | Louisville Colonels | 0 | 0 | 0 | 0 |
| 1899 | Louisville Colonels | 0 | 0 | 0 | 0 |
| 1900 | Pittsburgh Pirates | 0 | 0 | 0 | 0 |
| 1901 | Pittsburgh Pirates | 0 | 0 | 0 | 0 |
| 1902 | Pittsburgh Pirates | 0 | 0 | 0 | 0 |
| 1903 | Pittsburgh Pirates | 0 | 0 | 0 | 0 |
| 1904 | Pittsburgh Pirates | 0 | 0 | 0 | 0 |
| 1905 | Pittsburgh Pirates | 0 | 0 | 0 | 0 |
| 1906 | Pittsburgh Pirates | 0 | 0 | 0 | 0 |
| 1907 | Pittsburgh Pirates | 0 | 0 | 0 | 0 |
| 1908 | Pittsburgh Pirates | 0 | 0 | 0 | 0 |
| 1909 | Pittsburgh Pirates | 0 | 0 | 0 | 0 |
| 1910 | Pittsburgh Pirates | 0 | 0 | 0 | 0 |
| 1911 | Pittsburgh Pirates | 0 | 0 | 0 | 0 |
| 1912 | Chicago Cubs | 0 | 0 | 0 | 0 |
| 1912 | Pittsburgh Pirates | 0 | 0 | 0 | 0 |
| 1913 | Chicago Cubs | 0 | 0 | 0 | 0 |
| 1914 | Chicago Cubs | 0 | 0 | 0 | 0 |
| 1915 | Cincinnati Reds | 0 | 0 | 0 | 0 |
| 1918 | Pittsburgh Pirates | 0 | 0 | 0 | 0 |
| Year | Team | POS | E | DP | A |
|---|---|---|---|---|---|
| 1898 | Louisville Colonels | 2B | 0 | 0 | 1 |
| 1898 | Louisville Colonels | 3B | 3 | 0 | 6 |
| 1899 | Louisville Colonels | 2B | 2 | 1 | 3 |
| 1899 | Louisville Colonels | 3B | 34 | 13 | 200 |
| 1899 | Louisville Colonels | SS | 25 | 3 | 75 |
| 1900 | Pittsburgh Pirates | 2B | 2 | 3 | 28 |
| 1900 | Pittsburgh Pirates | 3B | 18 | 4 | 69 |
| 1900 | Pittsburgh Pirates | OF | 0 | 0 | 0 |
| 1900 | Pittsburgh Pirates | SS | 4 | 2 | 20 |
| 1901 | Pittsburgh Pirates | 3B | 34 | 9 | 196 |
| 1901 | Pittsburgh Pirates | SS | 1 | 2 | 12 |
| 1902 | Pittsburgh Pirates | 3B | 39 | 10 | 316 |
| 1903 | Pittsburgh Pirates | 3B | 65 | 16 | 292 |
| 1904 | Pittsburgh Pirates | 3B | 60 | 18 | 371 |
| 1905 | Pittsburgh Pirates | 2B | 0 | 0 | 3 |
| 1905 | Pittsburgh Pirates | 3B | 14 | 13 | 123 |
| 1905 | Pittsburgh Pirates | OF | 2 | 2 | 11 |
| 1905 | Pittsburgh Pirates | SS | 0 | 0 | 4 |
| 1906 | Pittsburgh Pirates | 3B | 16 | 4 | 135 |
| 1906 | Pittsburgh Pirates | OF | 4 | 0 | 6 |
| 1906 | Pittsburgh Pirates | SS | 0 | 0 | 2 |
| 1907 | Pittsburgh Pirates | 2B | 0 | 0 | 0 |
| 1907 | Pittsburgh Pirates | 3B | 15 | 5 | 65 |
| 1907 | Pittsburgh Pirates | OF | 6 | 5 | 15 |
| 1907 | Pittsburgh Pirates | SS | 3 | 2 | 15 |
| 1908 | Pittsburgh Pirates | 3B | 33 | 19 | 293 |
| 1908 | Pittsburgh Pirates | OF | 0 | 0 | 2 |
| 1909 | Pittsburgh Pirates | 3B | 2 | 2 | 26 |
| 1909 | Pittsburgh Pirates | OF | 11 | 3 | 12 |
| 1910 | Pittsburgh Pirates | 2B | 0 | 0 | 0 |
| 1910 | Pittsburgh Pirates | OF | 13 | 4 | 14 |
| 1910 | Pittsburgh Pirates | SS | 1 | 1 | 3 |
| 1911 | Pittsburgh Pirates | 3B | 0 | 0 | 0 |
| 1911 | Pittsburgh Pirates | OF | 3 | 3 | 15 |
| 1911 | Pittsburgh Pirates | SS | 4 | 3 | 27 |
| 1912 | Chicago Cubs | 3B | 1 | 0 | 7 |
| 1912 | Chicago Cubs | OF | 5 | 4 | 11 |
| 1912 | Pittsburgh Pirates | OF | 1 | 3 | 4 |
| 1913 | Chicago Cubs | 3B | 3 | 0 | 2 |
| 1913 | Chicago Cubs | OF | 3 | 5 | 15 |
| 1914 | Chicago Cubs | 3B | 7 | 0 | 26 |
| 1914 | Chicago Cubs | OF | 11 | 5 | 16 |
| 1915 | Cincinnati Reds | OF | 9 | 2 | 9 |
| 1918 | Pittsburgh Pirates | OF | 2 | 1 | 3 |
| 1918 | Pittsburgh Pirates | SS | 3 | 1 | 7 |