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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 |
| Oscar | Walker | Oscar | 1854 | 3 | 18 | Brooklyn | USA | 70 | 166 | 35 | L | L |
| Year | Team | AB | HR | RBI | BA |
|---|---|---|---|---|---|
| 1875 | Brooklyn Atlantics | 2 | 0 | 0 | 0.0000 |
| 1879 | Buffalo Bisons | 287 | 1 | 35 | 0.2753 |
| 1880 | Buffalo Bisons | 126 | 1 | 15 | 0.2302 |
| 1882 | St. Louis Brown Stockings | 318 | 7 | 0 | 0.2390 |
| 1884 | Brooklyn Atlantics | 382 | 2 | 0 | 0.2696 |
| 1885 | Baltimore Orioles | 13 | 0 | 1 | 0.0000 |
| Year | Team | W | L | G | SHO |
|---|---|---|---|---|---|
| 1875 | Brooklyn Atlantics | 0 | 0 | 0 | 0 |
| 1879 | Buffalo Bisons | 0 | 0 | 0 | 0 |
| 1880 | Buffalo Bisons | 0 | 0 | 0 | 0 |
| 1882 | St. Louis Brown Stockings | 0 | 0 | 0 | 0 |
| 1884 | Brooklyn Atlantics | 0 | 0 | 0 | 0 |
| 1885 | Baltimore Orioles | 0 | 0 | 0 | 0 |
| Year | Team | POS | E | DP | A |
|---|---|---|---|---|---|
| 1875 | Brooklyn Atlantics | 1B | 3 | 1 | 0 |
| 1875 | Brooklyn Atlantics | OF | 1 | 0 | 1 |
| 1879 | Buffalo Bisons | 1B | 49 | 52 | 30 |
| 1880 | Buffalo Bisons | 1B | 23 | 16 | 7 |
| 1880 | Buffalo Bisons | OF | 4 | 1 | 3 |
| 1882 | St. Louis Brown Stockings | 1B | 0 | 1 | 0 |
| 1882 | St. Louis Brown Stockings | 2B | 0 | 0 | 0 |
| 1882 | St. Louis Brown Stockings | OF | 32 | 4 | 18 |
| 1884 | Brooklyn Atlantics | 1B | 16 | 12 | 8 |
| 1884 | Brooklyn Atlantics | OF | 15 | 0 | 12 |
| 1885 | Baltimore Orioles | OF | 2 | 0 | 0 |