Buck O'Brien had a 0-2 record with an ERA of 5.00 and 4 strikeouts in 2 appearances in the World Series in his career.
| NAME | DATE | SEASON | SERIES | TM | OPP | DEC | GS | ERA | SO | CG | SHO | SV | IP | H | ER | R | HR | BB | HBP | GF | IBB | TBF | WP | |||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 |  | B. O'Brien | 10/10/1912 | 1912 | World Series |  BSA | vs |  NYG | L | 1 | 2.25 | 3 | 0 | 0 | 0 | 8.0 | 6 | 2 | 2 | 0 | 3 | 0 | 0 | 0 | 32 | 0 |
| 2 | | B. O'Brien | 10/14/1912 | 1912 | World Series | BSA | @ | NYG | L | 1 | 27.00 | 1 | 0 | 0 | 0 | 1.0 | 6 | 3 | 5 | 0 | 0 | 0 | 0 | 0 | 8 | 0 |
| Total | 2 | 5.00 | 4 | 0 | 0 | 0 | 9.0 | 12 | 5 | 7 | 0 | 3 | 0 | 0 | 0 | 40 | 0 |
Some of the information used here was obtained free of charge from Retrosheet.
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