Shane Bieber is 0-1 with an ERA of 4.24 and 21 strikeouts in 3 appearances in the regular-season and playoffs against the Mariners at home in his career.
| NAME | DATE | TM | OPP | DEC | GS | ERA | SO | CG | SHO | SV | IP | H | ER | R | HR | BB | HBP | GF | IBB | TBF | WP | |||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 |  | S. Bieber | 5/3/2019 |  CLE | vs |  SEA | 1 | 1.17 | 8 | 0 | 0 | 0 | 7.2 | 6 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 29 | 0 | |
| 2 | | S. Bieber | 6/13/2021 | CLE | vs | SEA | L | 1 | 7.94 | 8 | 0 | 0 | 0 | 5.2 | 10 | 5 | 5 | 2 | 2 | 0 | 0 | 0 | 28 | 1 |
| 3 |  | S. Bieber | 10/20/2025 |  TOR | vs | SEA | 1 | 4.91 | 5 | 0 | 0 | 0 | 3.2 | 7 | 2 | 2 | 1 | 1 | 0 | 0 | 0 | 18 | 0 | |
| Total | 3 | 4.24 | 21 | 0 | 0 | 0 | 17.0 | 23 | 8 | 8 | 4 | 4 | 0 | 0 | 0 | 75 | 1 |
Some of the information used here was obtained free of charge from Retrosheet.
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