Isaac Mattson
Pitcher
Seattle Mariners
Bats
R
Throws
R
Height
6' 2"
Weight
214 lbs
Age
31
Born
Jul 14, 1995
Birthplace
Erie, PA, USA
MLB Debut
May 7, 2021
Drafted
2017 · Rd 19, No. 565
Roster Control
Contract & Usage
Service Time0.161
Options Remaining1
Arb Eligible2028
Free Agent2032
Contract1 yr, $792.4k (2026)
2026 Salary$792,400
| Yr | Tm | Lvl | W | L | SV | HLD | BS | G | GS | IP | K/9 | BB/9 | HR/9 | LOB% | GB% | HR/FB% | HBP | WP | ERA | FIP | fWAR |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2021 | BAL | MLB | 0 | 0 | 0 | 0 | 0 | 4 | 0 | 4.1 | 6.23 | 10.38 | 0.00 | 70.0 | — | — | 0 | 1 | 6.23 | 5.25 | -0.0 |
| 2024 | PIT | MLB | 0 | 0 | 0 | 0 | 0 | 3 | 0 | 5.1 | 10.13 | 8.44 | 0.00 | 57.1 | — | — | 1 | 0 | 5.06 | 4.29 | 0.0 |
| 2025 | PIT | MLB | 3 | 3 | 0 | 12 | 3 | 44 | 0 | 47.2 | 8.50 | 3.59 | 0.76 | 83.3 | — | — | 2 | 0 | 2.45 | 3.66 | 0.7 |
| 2026 | PIT | MLB | 0 | 0 | 0 | 8 | 2 | 38 | 0 | 38.2 | 8.38 | 4.19 | 0.70 | 68.0 | — | — | 1 | 1 | 5.35 | 3.72 | 0.3 |
| Career | MLB | 3 | 3 | 0 | 20 | 5 | 89 | 0 | 96.0 | 8.44 | 4.41 | 0.66 | 73.7 | — | — | 4 | 2 | 3.94 | — | 1.0 |
