Pitcher · 2026
George Kirby
- Age
- 28
- B/T
- R/R
- Height
- 6' 4"
- Weight
- 215 lb
- Number
- #68
- Born
- February 4, 1998 in Rye, NY, USA
- MLB debut
- May 8, 2022
- Drafted
- 2019, round 1
- College
- Elon
- High school
- Rye
- Salary, 2026
- $6.55M
- dbWAR
- 8.2 3 season(s)
- IP
- 132.0
- ERA
- 3.68
- FIP
- 3.67
- K/9
- 7.6
- FIP−
- 88 100 = avg
George Kirby is a starting pitcher for the Seattle Mariners. In 2026 he struck out 112 batters over 132.0 innings across 22 appearances, 22 of them starts, going 8-9. His ERA of 3.68 was 11.8% lower than the league average of 4.18 — 9th of 15 on his team, and 206th of 467 among MLB pitchers with 20+ innings. Stripping out defence, his 3.67 FIP suggests the ERA was no fluke. He missed bats on 22.2% of swings (11.6% of every pitch he threw), walked 5.2% of the batters he faced and struck out 20.6%. His 2.1 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 | 287 | 264 | 71 | 9 | 21 | 52 | .269 | .324 | .439 | .335 | 18.1% |
| vs RHB | 256 | 247 | 69 | 7 | 7 | 60 | .279 | .305 | .417 | .315 | 23.4% |
Pitch sequencing
What George Kirby throws in each count, and what he follows each pitch with. Select any cell for the breakdown.
Select a count to see exactly what George Kirby throws in it.
Pitch arsenal
What he throws, how hard, and how often it misses in 2026.
| Sweeper | 594 | 87.3 | 2,374 | 49.5% | 26.8% | |
| Four-Seam Fastball | 587 | 96.6 | 2,260 | 49.2% | 22.6% | |
| Sinker | 423 | 96.9 | 2,309 | 48.5% | 12.1% | |
| Knuckle Curve | 187 | 83.9 | 2,370 | 44.4% | 22.8% | |
| Changeup | 147 | 88.7 | 1,544 | 38.8% | 27.5% | |
| Cutter | 64 | 93.2 | 2,332 | 35.9% | 25.8% |
Pitching
Standard and advanced, by season.
| Trend | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | 22 | 22 | 132.0 | 8 | 9 | 0 | 140 | 54 | 112 | 28 | 3.68 | 3.67 | 1.27 | 7.6 | 1.9 | 88 | 88 | 2.1 | |
| 2025 | 23 | 23 | 126.0 | 10 | 8 | 0 | 121 | 59 | 137 | 29 | 4.21 | 3.37 | 1.19 | 9.8 | 2.1 | 101 | 81 | 2.4 | |
| 2024 | 33 | 33 | 191.0 | 14 | 11 | 0 | 181 | 75 | 179 | 23 | 3.53 | 3.26 | 1.07 | 8.4 | 1.1 | 87 | 80 | 3.7 |
Head to head
Put George Kirby beside up to three others.
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.