Players · H · Pitcher · 2025
Tanner Houck
- Age
- 29
- B/T
- R/R
- Height
- 6' 5"
- Weight
- 226 lb
- Number
- #89
- Born
- June 29, 1996 in St. Louis, MO, United States
- MLB debut
- September 15, 2020
- Drafted
- 2017, round 1
- College
- Missouri
- High school
- Collinsville
- Salary, 2025
- $3.95M
- dbWAR
- 8.2 7 season(s)
- IP
- 43.2
- ERA
- 8.04
- FIP
- 6.16
- K/9
- 6.6
- FIP−
- 148 100 = avg
Tanner Houck was a starting pitcher for the Boston Red Sox. In 2025 he struck out 32 batters over 43.2 innings across 9 appearances, 9 of them starts, going 0-3. His ERA of 8.04 was 93.3% higher than the league average of 4.16 — the worst on his team, and 533rd of 542 among MLB pitchers with 20+ innings. Stripping out defence, his 6.16 FIP suggests he pitched better than his ERA shows. He missed bats on 21.6% of swings (9.6% of every pitch he threw), walked 8.4% of the batters he faced and struck out 15.8%. His -0.5 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, 2025.
WAR by season
Pitching
Standard and advanced, by season.
| Trend | ||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2025 | BOS | 9 | 9 | 43.2 | 0 | 3 | 0 | 57 | 39 | 32 | 17 | 8.04 | 6.16 | 1.69 | 6.6 | 3.5 | 193 | 148 | -0.5 | |
| 2024 | BOS | 30 | 30 | 178.2 | 9 | 10 | 0 | 156 | 62 | 154 | 48 | 3.12 | 3.32 | 1.14 | 7.8 | 2.4 | 77 | 81 | 3.8 | |
| 2023 | BOS | 21 | 21 | 106.0 | 6 | 10 | 0 | 104 | 59 | 99 | 41 | 5.01 | 4.43 | 1.37 | 8.4 | 3.5 | 116 | 102 | 1.3 | |
| 2022 | BOS | 32 | 4 | 60.0 | 5 | 4 | 8 | 49 | 21 | 56 | 22 | 3.15 | 3.30 | 1.18 | 8.4 | 3.3 | 79 | 83 | 0.9 | |
| 2021 | BOS | 18 | 13 | 69.0 | 1 | 5 | 1 | 57 | 27 | 87 | 21 | 3.52 | 2.58 | 1.13 | 11.3 | 2.7 | 83 | 60 | 2.2 | |
| 2020 | BOS | 3 | 3 | 17.0 | 3 | 0 | 0 | 6 | 1 | 21 | 9 | 0.53 | 3.25 | 0.88 | 11.1 | 4.8 | 12 | 73 | 0.5 |
Batting
Standard and advanced, by season.
| Trend | |||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2021 | BOS | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | .000 | .000 | .000 | .000 | — | 0.0% | 100.0% | .000 | -0.3 | -112 | -0.0 | — |
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 | 115 | 98 | 37 | 7 | 12 | 17 | .378 | .461 | .643 | .470 | 14.8% |
| vs RHB | 88 | 81 | 20 | 3 | 5 | 15 | .247 | .295 | .395 | .302 | 17.0% |
Pitch sequencing
What Tanner Houck throws in each count, and what he follows each pitch with. Select any cell for the breakdown.
Select a count to see exactly what Tanner Houck throws in it.
Pitch arsenal
What he throws, how hard, how often it misses, and what hitters do with it.
| Sinker | 298 | 94.5 | 2,229 | 47.0% | 15.3% | 75 | .253 | .863 | |
| Sweeper | 265 | 83.5 | 2,625 | 44.9% | 32.4% | 59 | .305 | .892 | |
| Splitter | 142 | 89.4 | 1,869 | 33.8% | 18.8% | 40 | .425 | .940 | |
| Four-Seam Fastball | 44 | 95.0 | 2,315 | 29.5% | 12.5% | 5 | — | — |
Head to head
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Similar players
Nearest 2025 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.