Andrew Heaney has a record of 4-10 with an ERA of 4.40 and 124 strikeouts in 23 appearances versus the Mariners 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 |  | A. Heaney | 7/12/2015 |  LAA | @ |  SEA | W | 1 | 0.00 | 6 | 0 | 0 | 0 | 7.0 | 5 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 26 | 1 |
| 2 | | A. Heaney | 9/26/2015 | LAA | vs | SEA | 1 | 3.00 | 5 | 0 | 0 | 0 | 6.0 | 5 | 2 | 2 | 1 | 2 | 0 | 0 | 0 | 24 | 0 | |
| 3 | | A. Heaney | 9/9/2017 | LAA | @ | SEA | L | 1 | 7.71 | 3 | 0 | 0 | 0 | 2.1 | 4 | 2 | 2 | 1 | 2 | 0 | 0 | 0 | 13 | 0 |
| 4 | | A. Heaney | 6/11/2018 | LAA | @ | SEA | L | 1 | 15.00 | 2 | 0 | 0 | 0 | 3.0 | 7 | 5 | 5 | 3 | 1 | 0 | 0 | 0 | 17 | 0 |
| 5 | | A. Heaney | 7/3/2018 | LAA | @ | SEA | L | 1 | 2.57 | 10 | 0 | 0 | 0 | 7.0 | 5 | 2 | 3 | 0 | 2 | 0 | 0 | 0 | 30 | 0 |
| 6 | | A. Heaney | 7/27/2018 | LAA | vs | SEA | 1 | 3.38 | 5 | 0 | 0 | 0 | 8.0 | 7 | 3 | 3 | 2 | 0 | 1 | 0 | 0 | 30 | 0 | |
| 7 | | A. Heaney | 9/15/2018 | LAA | vs | SEA | 1 | 3.60 | 4 | 0 | 0 | 0 | 5.0 | 8 | 2 | 2 | 2 | 1 | 0 | 0 | 0 | 22 | 1 | |
| 8 | | A. Heaney | 6/1/2019 | LAA | @ | SEA | 1 | 4.50 | 10 | 0 | 0 | 0 | 6.0 | 5 | 3 | 3 | 2 | 0 | 0 | 0 | 0 | 23 | 0 | |
| 9 | | A. Heaney | 6/7/2019 | LAA | vs | SEA | L | 1 | 7.94 | 10 | 0 | 0 | 0 | 5.2 | 6 | 5 | 5 | 2 | 2 | 1 | 0 | 0 | 26 | 0 |
| 10 | | A. Heaney | 7/29/2020 | LAA | vs | SEA | 1 | 3.60 | 6 | 0 | 0 | 0 | 5.0 | 5 | 2 | 2 | 0 | 1 | 0 | 0 | 0 | 19 | 0 | |
| 11 | | A. Heaney | 8/4/2020 | LAA | @ | SEA | W | 1 | 1.59 | 3 | 0 | 0 | 0 | 5.2 | 3 | 1 | 1 | 0 | 4 | 0 | 0 | 0 | 23 | 0 |
| 12 | | A. Heaney | 8/28/2020 | LAA | vs | SEA | W | 1 | 1.17 | 10 | 0 | 0 | 0 | 7.2 | 4 | 1 | 1 | 0 | 2 | 0 | 0 | 1 | 29 | 0 |
| 13 | | A. Heaney | 4/30/2021 | LAA | @ | SEA | L | 1 | 10.80 | 5 | 0 | 0 | 0 | 3.1 | 6 | 4 | 4 | 3 | 2 | 0 | 0 | 0 | 18 | 0 |
| 14 | | A. Heaney | 7/16/2021 | LAA | vs | SEA | L | 1 | 9.00 | 4 | 0 | 0 | 0 | 4.0 | 6 | 4 | 4 | 1 | 0 | 1 | 0 | 0 | 19 | 0 |
| 15 |  | A. Heaney | 8/7/2021 |  NYY | vs | SEA | W | 1 | 6.00 | 9 | 0 | 0 | 0 | 6.0 | 4 | 4 | 4 | 1 | 3 | 1 | 0 | 0 | 26 | 0 |
| 16 |  | A. Heaney | 5/9/2023 |  TEX | @ | SEA | L | 1 | 4.05 | 7 | 0 | 0 | 0 | 6.2 | 4 | 3 | 4 | 1 | 2 | 0 | 0 | 0 | 27 | 0 |
| 17 | | A. Heaney | 6/3/2023 | TEX | vs | SEA | 1 | 9.00 | 5 | 0 | 0 | 0 | 3.0 | 6 | 3 | 3 | 0 | 4 | 0 | 0 | 0 | 19 | 0 | |
| 18 | | A. Heaney | 9/22/2023 | TEX | vs | SEA | 0 | 0.00 | 2 | 0 | 0 | 0 | 2.1 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 9 | 0 | |
| 19 | | A. Heaney | 9/28/2023 | TEX | @ | SEA | 0 | 0.00 | 2 | 0 | 0 | 0 | 1.0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 4 | 0 | |
| 20 | | A. Heaney | 9/30/2023 | TEX | @ | SEA | 1 | 0.00 | 2 | 0 | 0 | 0 | 4.1 | 5 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 19 | 0 | |
| 21 | | A. Heaney | 4/25/2024 | TEX | vs | SEA | L | 1 | 6.00 | 7 | 0 | 0 | 0 | 6.0 | 5 | 4 | 4 | 2 | 0 | 0 | 0 | 0 | 23 | 0 |
| 22 | | A. Heaney | 6/14/2024 | TEX | @ | SEA | L | 1 | 5.79 | 4 | 0 | 0 | 0 | 4.2 | 6 | 3 | 3 | 1 | 3 | 0 | 0 | 0 | 23 | 0 |
| 23 | | A. Heaney | 9/15/2024 | TEX | @ | SEA | L | 1 | 5.40 | 3 | 0 | 0 | 0 | 5.0 | 7 | 3 | 3 | 1 | 1 | 1 | 0 | 0 | 23 | 0 |
| Total | 21 | 4.40 | 124 | 0 | 0 | 0 | 114.2 | 113 | 56 | 58 | 23 | 36 | 5 | 0 | 1 | 492 | 2 |
Some of the information used here was obtained free of charge from Retrosheet.
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