Players · M · Pitcher · 2026 regular season
Mason Montgomery
- Age
- 26
- B/T
- L/L
- Height
- 6' 2"
- Weight
- 205 lb
- Number
- #46
- Born
- June 17, 2000 in Austin, TX, United States
- MLB debut
- September 5, 2024
- Drafted
- 2018, round 39
- College
- Texas Tech
- High school
- Leander
- dbWAR
- 2.8 Regular season, 3 season(s)
- IP
- 68.2
- ERA
- 2.88
- FIP
- 2.36
- K/9
- 13.8
- FIP−
- 56 100 = avg
Mason Montgomery is a relief pitcher for the Pittsburgh Pirates. In 2026 he struck out 105 batters over 68.2 innings across 70 appearances, going 6-4. His ERA of 2.88 was 31.0% lower than the league average of 4.18 — the second best on his team, and 80th of 539 among MLB pitchers with 20+ innings. Stripping out defence, his 2.36 FIP suggests he pitched better than his ERA shows. He missed bats on 32.5% of swings (16.0% of every pitch he threw), walked 9.4% of the batters he faced and struck out 37.8%. His 2.0 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 regular season.
WAR by season
Pitching Regular season
Standard and advanced, by season. Regular-season games only.
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 | 97 | 83 | 10 | 1 | 12 | 35 | .120 | .237 | .157 | .201 | 36.1% |
| vs RHB | 181 | 167 | 35 | 5 | 14 | 70 | .210 | .271 | .359 | .275 | 38.7% |
Pitch sequencing
What Mason Montgomery throws in each count, and what he follows each pitch with. Select any cell for the breakdown.
Select a count to see exactly what Mason Montgomery throws in it.
Pitch arsenal
What he throws, how hard, how often it misses, and what hitters do with it.
| Four-Seam Fastball | 542 | 98.5 | 2,225 | 55.5% | 30.5% | 124 | .194 | .563 | |
| Sinker | 286 | 98.7 | 2,219 | 58.0% | 33.1% | 48 | .167 | .497 | |
| Slider | 164 | 89.6 | 2,647 | 48.2% | 40.2% | 30 | .033 | .180 | |
| Curveball | 154 | 86.5 | 2,691 | 44.2% | 33.3% | 43 | .256 | .824 | |
| Changeup | 23 | 89.8 | 1,662 | 43.5% | 10.0% | 5 | — | — |
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Similar players
Nearest 2026 seasons by command, run prevention and role, on rate statistics rather than totals.
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.