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| Name: | Sleeper Sullivan |
| Given name: | Thomas Jefferson |
| Birth place: | , , Ireland |
| Birthday: | 0/0/1859 |
| Height: | 67 inches |
| Weight: | 175 lbs |
| Batting: | Right-handed |
| Throwing: | Right-handed |
| Age/Age at time of death: |
| Year | Team Name | Batting Statistics | Pitching Statistics | Fielding Statistics |
|---|---|---|---|---|
| 1881 | Buffalo Bisons | Hits: 137 At Bats: 343 HR: 1 RBI: 82 | Wins: 0 Losses: 3 Total Games: 3 Strikeouts: 2 Shutouts: 0 | Position: 1B Errors: 24 Double Plays: 48 Assists: 43 |
| 1882 | St. Louis Brown Stockings | Hits: 126 At Bats: 348 HR: 1 RBI: 83 | Wins: 4 Losses: 10 Total Games: 14 Strikeouts: 47 Shutouts: 0 | Position: 1B Errors: 45 Double Plays: 42 Assists: 27 |
| 1883 | Louisville Eclipse | Hits: 0 At Bats: 4 HR: 0 RBI: 1 | Wins: 0 Losses: 1 Total Games: 1 Strikeouts: 0 Shutouts: 0 | Position: P Errors: 0 Double Plays: 0 Assists: 1 |
| 1883 | St. Louis Browns | Hits: 0 At Bats: 4 HR: 0 RBI: 1 | Wins: 0 Losses: 1 Total Games: 1 Strikeouts: 0 Shutouts: 0 | Position: P Errors: 0 Double Plays: 0 Assists: 1 |
| 1884 | St. Louis Maroons | Hits: 10 At Bats: 52 HR: 0 RBI: 2 | Wins: 1 Losses: 0 Total Games: 1 Strikeouts: 2 Shutouts: 0 | Position: 3B Errors: 10 Double Plays: 2 Assists: 15 |