Players · I · Pitcher · 2026 regular season
Tatsuya Imai
- Age
- 28
- B/T
- R/R
- Height
- 5' 11"
- Weight
- 176 lb
- Number
- #45
- Born
- May 9, 1998 in Kanuma, Japan
- MLB debut
- March 29, 2026
- dbWAR
- .7 Regular season, 1 season(s)
- IP
- 76.2
- ERA
- 4.93
- FIP
- 4.25
- K/9
- 11.4
- FIP−
- 102 100 = avg
Tatsuya Imai is a starting pitcher for the Houston Astros. In 2026 he struck out 97 batters over 76.2 innings across 23 appearances, 15 of them starts, going 6-4. His ERA of 4.93 was 17.9% higher than the league average of 4.18 — 11th of 20 on his team, and 396th of 539 among MLB pitchers with 20+ innings. Stripping out defence, his 4.25 FIP suggests he pitched better than his ERA shows. He missed bats on 32.7% of swings (14.3% of every pitch he threw), walked 15.1% of the batters he faced and struck out 28.7%. His 0.7 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.
Pitching Regular season
Standard and advanced, by season. Regular-season games only.
| Trend | ||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | HOU | 23 | 15 | 76.2 | 6 | 4 | 0 | 58 | 42 | 97 | 51 | 4.93 | 4.25 | 1.42 | 11.4 | 6.0 | 118 | 102 | 0.7 | — |
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 | 204 | 170 | 37 | 7 | 31 | 56 | .218 | .338 | .376 | .325 | 27.5% |
| vs RHB | 134 | 110 | 21 | 2 | 20 | 41 | .191 | .331 | .273 | .292 | 30.6% |
Pitch sequencing
What Tatsuya Imai throws in each count, and what he follows each pitch with. Select any cell for the breakdown.
Select a count to see exactly what Tatsuya Imai throws in it.
Pitch arsenal
What he throws, how hard, how often it misses, and what hitters do with it.
| Slider | 662 | 86.6 | 2,277 | 49.1% | 39.9% | 163 | .166 | .568 | |
| Four-Seam Fastball | 642 | 94.8 | 1,997 | 46.6% | 21.3% | 100 | .280 | .819 | |
| Sinker | 61 | 94.5 | 1,952 | 41.0% | 18.5% | 11 | — | — | |
| Splitter | 44 | 84.7 | 1,283 | 22.7% | 75.0% | 1 | — | — | |
| Changeup | 36 | 86.9 | 1,968 | 44.4% | 70.0% | 4 | — | — |
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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.