George Kirby
SP · SEA
MLBAM 669923
Seasons
| Yr | BF | K% | BB% | xwOBA | Pts | PPG |
|---|---|---|---|---|---|---|
| 2026 | 103 | 21.4% | 5.8% | 0.274 | 74 | 14.80 |
| 2025 | 526 | 26.0% | 5.5% | 0.306 | 278 | 10.30 |
| 2024 | 780 | 22.9% | 2.9% | 0.291 | 437 | 12.85 |
| 2023 | 758 | 22.7% | 2.5% | 0.305 | 451 | 13.67 |
| 2022 | 543 | 24.5% | 4.1% | 0.287 | 320 | 10.67 |
2026 MLB Percentile Rankings
Arsenal
FB Velocity
87
96.5
FB Spin
35
2218
Extension
65
6.64
Results
xwOBA
80
0.274
Barrel %
75
5.4
Hard-Hit %
27
45.9
K %
43
21.4
BB %
85
5.8
Chase %
93
35.9
Whiff %
6
15.6
Command & Stuff
Pitching+
Expected run-value conceded per pitch against a rational hitter, standardized against the season. 100 = avg · 110 = 1 SD better.
Pitching+
113
≈ 90th pctl
Stuff+
96
if they swing
Command+
114
out-of-zone take RV
Strike quality+
98
RV of in-zone pitches
Crushable pitches
8.7%
39 meatballs
Putaway counts (0-2, 1-2)
0.038
RV per pitch · league 0.042
-0.004 better than avg · 122 pitches
Lower RV = more wasted whiff chances when they choose not to put hitters away.
Hitter's counts (3-0, 3-1, 2-0)
0.014
RV per pitch · league 0.029
-0.015 better than avg · 20 pitches
How often they groove get-me-overs vs. nibble safely.
Based on 446 pitches. RV = Statcast delta_run_exp; lower = better for the pitcher.
2026 Movement Profile (Induced Break)
MLB Avg.
| FF | SL | SI | KC | CH | FC | |
|---|---|---|---|---|---|---|
| Usage | 38% | 20% | 17% | 13% | 9% | 3% |
| MPH | 96.6 | 86.5 | 96.9 | 83.7 | 88.5 | 92.4 |
| RHP Avg | 95.0 | 86.7 | 94.3 | 83.0 | 86.9 | 89.8 |
2026 Tunneling
Where pitches are when the hitter commits — and where they end up. Tighter cluster on the left = more deceptive arsenal.
At Decision
23 ft out · ~280ms before arrival
At the Plate
Where they actually cross
FFSLSIKCCHFC
Decision point computed from Statcast kinematics (vx0/vy0/vz0, ax/ay/az) by projecting each pitch back to y = 23 ft. Coordinates in catcher’s view: 1B on the left, 3B on the right. RHP.
2026 Divergence from a Shared Origin
Every pitch type launched from the same decision-point — how far apart they end up by the plate. Bigger fan = harder arsenal to square up.
Distances from origin (in inches) show how far each pitch type separates itself from the common launch point by plate arrival. RHP.