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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 |
| Doc | Casey | James Patrick | 1870 | 3 | 15 | Lawrence | USA | 66 | 157 | 66 | B | R |
| Year | Team | AB | HR | RBI | BA |
|---|---|---|---|---|---|
| 1898 | Washington Senators | 112 | 0 | 15 | 0.2768 |
| 1899 | Brooklyn Superbas | 525 | 1 | 43 | 0.2686 |
| 1899 | Washington Senators | 34 | 0 | 2 | 0.1176 |
| 1900 | Brooklyn Superbas | 3 | 0 | 1 | 0.3333 |
| 1901 | Detroit Tigers | 540 | 2 | 46 | 0.2833 |
| 1902 | Detroit Tigers | 520 | 3 | 55 | 0.2731 |
| 1903 | Chicago Cubs | 435 | 1 | 40 | 0.2897 |
| 1904 | Chicago Cubs | 548 | 1 | 43 | 0.2682 |
| 1905 | Chicago Cubs | 526 | 1 | 56 | 0.2319 |
| 1906 | Brooklyn Superbas | 571 | 0 | 34 | 0.2329 |
| 1907 | Brooklyn Superbas | 527 | 0 | 19 | 0.2315 |
| Year | Team | W | L | G | SHO |
|---|---|---|---|---|---|
| 1898 | Washington Senators | 0 | 0 | 0 | 0 |
| 1899 | Brooklyn Superbas | 0 | 0 | 0 | 0 |
| 1899 | Washington Senators | 0 | 0 | 0 | 0 |
| 1900 | Brooklyn Superbas | 0 | 0 | 0 | 0 |
| 1901 | Detroit Tigers | 0 | 0 | 0 | 0 |
| 1902 | Detroit Tigers | 0 | 0 | 0 | 0 |
| 1903 | Chicago Cubs | 0 | 0 | 0 | 0 |
| 1904 | Chicago Cubs | 0 | 0 | 0 | 0 |
| 1905 | Chicago Cubs | 0 | 0 | 0 | 0 |
| 1906 | Brooklyn Superbas | 0 | 0 | 0 | 0 |
| 1907 | Brooklyn Superbas | 0 | 0 | 0 | 0 |
| Year | Team | POS | E | DP | A |
|---|---|---|---|---|---|
| 1898 | Washington Senators | 3B | 8 | 4 | 45 |
| 1898 | Washington Senators | C | 1 | 0 | 4 |
| 1898 | Washington Senators | SS | 5 | 1 | 13 |
| 1899 | Brooklyn Superbas | 3B | 51 | 20 | 258 |
| 1899 | Washington Senators | 3B | 5 | 3 | 17 |
| 1900 | Brooklyn Superbas | 3B | 0 | 0 | 2 |
| 1901 | Detroit Tigers | 3B | 58 | 25 | 324 |
| 1902 | Detroit Tigers | 3B | 51 | 17 | 309 |
| 1903 | Chicago Cubs | 3B | 31 | 5 | 190 |
| 1904 | Chicago Cubs | 3B | 39 | 11 | 241 |
| 1904 | Chicago Cubs | C | 0 | 0 | 3 |
| 1905 | Chicago Cubs | 3B | 22 | 7 | 252 |
| 1905 | Chicago Cubs | SS | 0 | 0 | 2 |
| 1906 | Brooklyn Superbas | 3B | 39 | 11 | 272 |
| 1907 | Brooklyn Superbas | 3B | 21 | 16 | 274 |