Pitcher · 2026
Matt Brash
- Age
- 28
- B/T
- R/R
- Height
- 6' 1"
- Weight
- 173 lb
- Number
- #47
- Born
- May 12, 1998 in Kingston, ON, Canada
- MLB debut
- April 12, 2022
- Drafted
- 2019, round 4
- College
- Niagara
- Salary, 2026
- $1.55M
- dbWAR
- 1.1 2 season(s)
- IP
- 16.2
- ERA
- 0.54
- FIP
- 2.91
- K/9
- 8.1
- FIP−
- 70 100 = avg
Matt Brash is a relief pitcher for the Seattle Mariners. In 2026 he struck out 15 batters over 16.2 innings across 20 appearances, going 3-0. His ERA of 0.54 was 87.1% lower than the league average of 4.18. Stripping out defence, his 2.91 FIP suggests that his ERA had some help behind him. He missed bats on 31.7% of swings (12.7% of every pitch he threw), walked 9.4% of the batters he faced and struck out 23.4%. His 0.3 dbWAR is built from that FIP rather than runs allowed, so it credits him for what he controls and not for the defence behind him.
League context
Percentile among qualified pitchers, 2026.
Platoon splits
How left- and right-handed hitters fare against him.
| Split | PA | AB | H | HR | BB | SO | AVG | OBP | SLG | wOBA | K% |
|---|---|---|---|---|---|---|---|---|---|---|---|
| vs LHB | 32 | 27 | 4 | 0 | 4 | 6 | .148 | .281 | .185 | .237 | 18.8% |
| vs RHB | 32 | 26 | 4 | 0 | 2 | 9 | .154 | .258 | .192 | .205 | 28.1% |
Pitch sequencing
What Matt Brash throws in each count, and what he follows each pitch with. Select any cell for the breakdown.
Select a count to see exactly what Matt Brash throws in it.
Pitch arsenal
What he throws, how hard, and how often it misses in 2026.
| Slider | 156 | 86.8 | 2,921 | 45.5% | 38.1% | |
| Sinker | 55 | 97.4 | 2,254 | 47.3% | 19.0% | |
| Changeup | 34 | 91.0 | 1,811 | 38.2% | 27.8% | |
| Four-Seam Fastball | 15 | 96.5 | 2,226 | 26.7% | 0.0% |
Pitching
Standard and advanced, by season.
| Trend | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | 20 | 0 | 16.2 | 3 | 0 | 0 | 8 | 1 | 15 | 6 | 0.54 | 2.91 | 0.84 | 8.1 | 3.2 | 13 | 70 | 0.3 | |
| 2025 | 53 | 0 | 47.1 | 1 | 3 | 4 | 41 | 13 | 58 | 18 | 2.47 | 3.05 | 1.25 | 11.0 | 3.4 | 59 | 73 | 0.8 |
Head to head
Put Matt Brash beside up to three others.
wOBA uses linear weights measured from this season's own play-by-play rather than published constants, and wRC+ is park-adjusted against that same league. dbWAR is our own open implementation — not fWAR or bWAR — and the full derivation, including its simplifications, is on the methodology page.