| Year | W | L | Sv | Hold | IP | H | BB | SO | ER | ERA | WHIP | Rate |
| 2026 proj | 4 | 4 | 3 | 20 | 56.0 | 49 | 24 | 75 | 19 | 3.00 | 1.315 | 25.2 |
| 2026 | 3 | 0 | 0 | 4 | 12.3 | 4 | 2 | 10 | 0 | 0.00 | 0.486 | 50.3 |
| 2025 | 1 | 3 | 4 | 21 | 47.3 | 41 | 18 | 58 | 13 | 2.47 | 1.246 | 28.1 |
| 2023 | 9 | 4 | 4 | 24 | 70.7 | 64 | 29 | 107 | 24 | 3.06 | 1.316 | 43.4 |
| Date | News |
| 5/20/26 | Mariners reinstate reliever Matt Brash from injured list. Setup reliever Matt Brash was activated from the 15-day injured list Wednesday morning ahead of the Mariners’ series finale against the White Sox. Source: https://www.seattletimes.com/sports/mariners/marin... |
| 5/01/26 | Here’s the latest injury update on Mariners’ Matt Brash | Notebook. The Mariners got "very good news" about Matt Brash's injury. But the reliever is still landing on the injured list. Here's the latest. Source: https://www.seattletimes.com/sports/mariners/heres... |
| 4/29/26 | Matt Brash leaves Mariners game with discomfort: Here’s what we know. Mariners reliever Matt Brash left Wednesday's game after throwing two pitches with discomfort in his side. "I couldn't really get my arm into the spot that I needed to," he said. Source: https://www.seattletimes.com/sports/mariners/matt-... |
| 2/26/26 | After dental issue, Mariners’ Matt Brash is back on the mound and feeling ‘really good’. An oral surgery sidelined Matt Brash to start Mariners spring training. But, after dealing with much worse, he's back, healthy and hopeful to pitch deep into the postseason. Source: https://www.seattletimes.com/sports/mariners/after... |
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