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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 |
| Jack | Clements | John J. | 1864 | 7 | 24 | Philadelphia | USA | 68 | 204 | 76 | L | L |
| Year | Team | AB | HR | RBI | BA |
|---|---|---|---|---|---|
| 1884 | Philadelphia Quakers | 30 | 0 | 0 | 0.2333 |
| 1884 | Philadelphia Keystones | 177 | 3 | 0 | 0.2825 |
| 1885 | Philadelphia Quakers | 188 | 1 | 14 | 0.1915 |
| 1886 | Philadelphia Quakers | 185 | 0 | 11 | 0.2054 |
| 1887 | Philadelphia Quakers | 246 | 1 | 47 | 0.2805 |
| 1888 | Philadelphia Quakers | 326 | 1 | 32 | 0.2454 |
| 1889 | Philadelphia Quakers | 310 | 4 | 35 | 0.2839 |
| 1890 | Philadelphia Phillies | 381 | 7 | 74 | 0.3150 |
| 1891 | Philadelphia Phillies | 423 | 4 | 75 | 0.3097 |
| 1892 | Philadelphia Phillies | 402 | 8 | 76 | 0.2637 |
| 1893 | Philadelphia Phillies | 376 | 17 | 80 | 0.2846 |
| 1894 | Philadelphia Phillies | 159 | 3 | 36 | 0.3459 |
| 1895 | Philadelphia Phillies | 322 | 13 | 75 | 0.3944 |
| 1896 | Philadelphia Phillies | 184 | 5 | 45 | 0.3587 |
| 1897 | Philadelphia Phillies | 185 | 6 | 36 | 0.2378 |
| 1898 | St. Louis Browns | 335 | 3 | 41 | 0.2567 |
| 1899 | Cleveland Spiders | 12 | 0 | 0 | 0.2500 |
| 1900 | Boston Beaneaters | 42 | 1 | 10 | 0.3095 |
| Year | Team | W | L | G | SHO |
|---|---|---|---|---|---|
| 1884 | Philadelphia Quakers | 0 | 0 | 0 | 0 |
| 1884 | Philadelphia Keystones | 0 | 0 | 0 | 0 |
| 1885 | Philadelphia Quakers | 0 | 0 | 0 | 0 |
| 1886 | Philadelphia Quakers | 0 | 0 | 0 | 0 |
| 1887 | Philadelphia Quakers | 0 | 0 | 0 | 0 |
| 1888 | Philadelphia Quakers | 0 | 0 | 0 | 0 |
| 1889 | Philadelphia Quakers | 0 | 0 | 0 | 0 |
| 1890 | Philadelphia Phillies | 0 | 0 | 0 | 0 |
| 1891 | Philadelphia Phillies | 0 | 0 | 0 | 0 |
| 1892 | Philadelphia Phillies | 0 | 0 | 0 | 0 |
| 1893 | Philadelphia Phillies | 0 | 0 | 0 | 0 |
| 1894 | Philadelphia Phillies | 0 | 0 | 0 | 0 |
| 1895 | Philadelphia Phillies | 0 | 0 | 0 | 0 |
| 1896 | Philadelphia Phillies | 0 | 0 | 0 | 0 |
| 1897 | Philadelphia Phillies | 0 | 0 | 0 | 0 |
| 1898 | St. Louis Browns | 0 | 0 | 0 | 0 |
| 1899 | Cleveland Spiders | 0 | 0 | 0 | 0 |
| 1900 | Boston Beaneaters | 0 | 0 | 0 | 0 |
| Year | Team | POS | E | DP | A |
|---|---|---|---|---|---|
| 1884 | Philadelphia Quakers | C | 14 | 1 | 16 |
| 1884 | Philadelphia Keystones | C | 18 | 0 | 32 |
| 1884 | Philadelphia Keystones | OF | 13 | 2 | 14 |
| 1884 | Philadelphia Keystones | SS | 0 | 0 | 0 |
| 1885 | Philadelphia Quakers | C | 28 | 2 | 47 |
| 1885 | Philadelphia Quakers | OF | 4 | 1 | 2 |
| 1886 | Philadelphia Quakers | C | 28 | 3 | 52 |
| 1886 | Philadelphia Quakers | OF | 2 | 0 | 2 |
| 1887 | Philadelphia Quakers | 3B | 0 | 0 | 2 |
| 1887 | Philadelphia Quakers | C | 26 | 8 | 79 |
| 1887 | Philadelphia Quakers | SS | 0 | 2 | 10 |
| 1888 | Philadelphia Quakers | C | 47 | 6 | 104 |
| 1888 | Philadelphia Quakers | OF | 0 | 0 | 0 |
| 1889 | Philadelphia Quakers | C | 42 | 7 | 77 |
| 1890 | Philadelphia Phillies | 1B | 0 | 2 | 3 |
| 1890 | Philadelphia Phillies | C | 35 | 12 | 92 |
| 1891 | Philadelphia Phillies | 1B | 0 | 0 | 0 |
| 1891 | Philadelphia Phillies | C | 41 | 10 | 108 |
| 1892 | Philadelphia Phillies | C | 35 | 12 | 107 |
| 1893 | Philadelphia Phillies | 1B | 1 | 1 | 1 |
| 1893 | Philadelphia Phillies | C | 25 | 5 | 75 |
| 1894 | Philadelphia Phillies | C | 12 | 4 | 32 |
| 1895 | Philadelphia Phillies | C | 11 | 7 | 69 |
| 1896 | Philadelphia Phillies | C | 7 | 3 | 51 |
| 1897 | Philadelphia Phillies | C | 8 | 3 | 40 |
| 1898 | St. Louis Browns | C | 11 | 8 | 81 |
| 1899 | Cleveland Spiders | C | 1 | 0 | 7 |
| 1900 | Boston Beaneaters | C | 3 | 2 | 10 |