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George Kirby

#68 - Starting Pitcher

Seattle Mariners

Bats / Throws Right / Right
Date of Birth 2/4/1998 (28)
Height, Weight 6'4", 215 lb
Hometown Rye, NY

2026 Season Stats

MLB Rank MLB Average
W-L IP ERA WHIP K% BB%
5-4 68.2 3.54 1.21 19.8% 5.8%
15th 3
W
5th 43.0
IP
68th 4.50
ERA
81st 1.34
WHIP
117th 21.3%
K%
26th 9.3%
BB%
FB MPH SwStr% CSW% Str-ICR MTK% PLV PLA
96.7 10.8% 25.8% 55.0% 4.6% 5.18 2.37
25th 94.2
FB MPH
117th 11.4%
SwStr%
154th 27.6%
CSW%
17th 49.7%
Str-ICR
95th 4.7%
MTK%
20th 4.97
PLV
12th 3.26
PLA
The List
Rank
23rd

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George Kirby Overview

Hide 2026 MLB Percentile | Hide 2026 MLB Average
Year Team G GS IP W-L QS ERA WHIP xERA FIP xFIP PLA K% BB% H/9 HR/9 BABIP HR/FB% LOB% ICR GB% SwStr% CSW% IPR PLV
2022 SEA 25 25 130.0 8-5 11 3.39 1.21 3.22 2.99 3.26 2.99 24.5% 4.1% 9.3 0.90 .332 14.6% 75.1% 36.9% 47.8% 11.1% 27.3% 0.56 5.11
2023 SEA 31 31 190.2 13-10 20 3.35 1.04 3.40 3.34 3.50 2.67 22.7% 2.5% 8.4 1.04 .293 17.7% 75.1% 38.2% 46.0% 12.5% 28.8% 0.60 5.18
2024 SEA 33 33 191.0 14-11 20 3.53 1.07 3.08 3.26 3.66 2.73 23.0% 3.0% 8.5 1.04 .292 14.5% 71.6% 35.2% 43.0% 12.8% 27.9% 0.54 5.15
2025 SEA 23 23 126.0 10-8 12 4.21 1.19 3.75 3.37 3.25 2.82 26.1% 5.5% 8.6 1.07 .315 20.3% 71.3% 43.0% 48.6% 13.1% 29.2% 0.55 5.15
2026 SEA 11 11 68.2 5-4 6 3.54 1.21 3.26 3.41 3.64 2.37 19.8% 5.8% 8.8 0.79 .307 14.3% 73.1% 29.3% 56.9% 10.8% 25.8% 0.45 5.18
SP MLB Percentile 67 76 97 85-15 86 66 59 80 75 71 94 41 86 36 69 31 65 50 96 97 41 21 41 90
SP MLB AVG 9 8 43.0 3-3 3 4.50 1.34 4.37 4.38 4.22 3.26 21.3% 9.3% 8.4 1.20 .285 19.1% 72.7% 38.7% 43.4% 11.4% 27.6% 0.47 4.97
Career 123 123 706.1 50-38 69 3.58 1.12 3.33 3.27 3.47 2.74 23.5% 3.8% 8.7 0.99 .305 16.2% 73.3% 37.1% 47.0% 12.3% 28.1% 0.55 5.15

George Kirby Repertoire

2022 2023 2024 2025 2026 All
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George Kirby Game Log

George Kirby Standard

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Year Team G GS IP W-L QS Sv Hld P Strikes Balls TBF H 1B 2B 3B HR K BB HB WP
2022 SEA 25 25 130.0 8-5 11 0 0 2,092 1,440 652 542 135 97 23 2 13 133 22 5 4
2023 SEA 31 31 190.2 13-10 20 0 0 2,825 2,002 823 757 179 122 28 7 22 172 19 6 1
2024 SEA 33 33 191.0 14-11 20 0 0 2,967 2,030 936 778 181 118 38 3 22 179 23 7 5
2025 SEA 23 23 126.0 10-8 12 0 0 2,086 1,360 727 524 121 85 20 1 15 137 29 7 3
2026 SEA 11 11 68.2 5-4 6 0 0 1,019 680 340 278 67 52 9 0 6 55 16 2 0
SP MLB Percentile 67 76 97 85-15 86 0 0 92 96 22 98 1 1 31 44 36 77 46 32 58
SP MLB AVG 9 8 43.0 3-3 3 0 0 706 450 257 182 39 26 8 1 5 40 16 2 1
Career 123 123 706.1 50-38 69 0 0 10,989 7,512 3,478 2,879 683 474 118 13 78 676 109 27 13

George Kirby Advanced

Hide 2026 MLB Percentile | Hide 2026 MLB Average
Year Team K% BB% AVG SLG OPS wOBA BABIP BACON xAVG xwOBA xBABIP xwoBACON EV FB EV LA xERA
2022 SEA 24.5% 4.1% .264 .393 .692 .302 .332 .354 .233 .283 .284 .352 88.7 87.9 11.1 3.22
2023 SEA 22.7% 2.5% .246 .395 .665 .285 .293 .321 .241 .281 .283 .348 89.0 89.2 12.2 3.40
2024 SEA 23.0% 3.0% .245 .393 .665 .287 .292 .320 .224 .273 .259 .335 88.4 87.9 14.3 3.08
2025 SEA 26.1% 5.5% .252 .392 .692 .300 .315 .345 .255 .303 .323 .382 90.3 88.9 11.4 3.75
2026 SEA 19.8% 5.8% .259 .363 .669 .301 .307 .327 .236 .290 .275 .331 89.3 90.7 8.8 3.26
SP MLB Percentile 41 86 34 64 62 61 31 35 60 80 59 80 33 46 86 80
SP MLB AVG 21.3% 9.3% .244 .407 .728 .325 .285 .318 .246 .333 .285 .379 88.6 90.2 14.0 4.37
Career 23.5% 3.8% .251 .391 .676 .299 .305 .331 .237 .290 .283 .357 89.0 88.6 12.1 3.33

George Kirby Pitch › Mix

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Year Team FF% (MPH) SI% (MPH) FC% (MPH) SL% (MPH) ST% (MPH) CB% (MPH) CH% (MPH) FS% (MPH) KN% (MPH) Fastball% Secondary%
2022 SEA 46.3% (95.3) 11.3% (94.7) - 21.1% (87.1) - 13.3% (80.8) 8.0% (86.0) - - 57.6% 42.4%
2023 SEA 39.4% (96.1) 21.6% (95.8) - 19.8% (86.2) - 11.4% (81.8) 1.8% (86.6) 6.1% (84.8) 0.0% (73.2) 60.9% 39.1%
2024 SEA 34.0% (96.0) 23.6% (96.0) 0.4% (92.3) 23.7% (87.2) - 8.1% (83.3) - 10.2% (86.0) 0.0% (73.9) 57.6% 42.4%
2025 SEA 29.0% (96.2) 26.6% (96.2) - 27.5% (87.2) - 12.0% (84.3) 2.2% (87.8) 2.7% (86.0) - 55.6% 44.4%
2026 SEA 31.3% (96.7) 19.6% (96.9) 4.1% (93.0) 1.0% (86.0) 26.2% (86.9) 10.3% (83.8) 7.5% (88.7) - - 50.9% 49.1%
SP MLB Percentile 43 (87) 57 (94) 3 (93) 0 (40) 86 (95) 35 (87) 14 (75) - - 70.5% 29.0%
SP MLB AVG 33.5% (94.2) 20.4% (93.7) 17.0% (89.2) 18.7% (86.2) 16.0% (82.4) 14.5% (80.0) 16.7% (86.3) 20.1% (86.4) 27.6% (80.5) 46.6% 53.3%
Career 36.5% (95.9) 20.9% (96.0) 0.5% (92.8) 20.8% (86.9) 2.4% (86.9) 10.9% (82.6) 3.1% (87.0) 4.8% (85.6) 0.0% (73.6) 57.4% 42.5%

George Kirby Pitch › Results

Hide 2026 MLB Percentile | Hide 2026 MLB Average
Year Team FF CSW% SI CSW% FC CSW% SL CSW% ST CSW% CB CSW% CH CSW% FS CSW% KN CSW% Fastball CSW% Secondary CSW%
2022 SEA 31.0% (155) 28.4% (11) - 21.7% (39) - 28.4% (16) 18.0% (12) - - 30.5% 23.1%
2023 SEA 28.2% (198) 26.3% (43) - 33.3% (54) - 32.3% (24) 15.7% (3) 24.4% (30) 100.0% (1) 27.5% 30.9%
2024 SEA 28.3% (178) 25.3% (41) 9.1% (0) 34.1% (82) - 26.6% (34) - 19.5% (45) 0.0% (0) 27.1% 28.9%
2025 SEA 26.1% (102) 27.0% (29) - 36.3% (78) - 29.9% (51) 17.4% (2) 19.6% (11) - 26.6% 32.6%
2026 SEA 22.6% (40) 27.5% (13) 16.7% (3) 40.0% (2) 32.6% (36) 20.0% (8) 22.4% (8) - - 24.5% 27.2%
SP MLB Percentile 13 (85) 56 (79) 6 (10) 94 (5) 72 (95) 10 (45) 43 (36) - - 16.5% 42.0%
SP MLB AVG 27.1% (23) 26.5% (8) 26.6% (12) 29.3% (18) 28.1% (14) 29.7% (13) 23.3% (17) 23.9% (24) 27.3% (11) 27.3% 27.7%
Career 28.2% (673) 26.5% (137) 15.1% (3) 32.1% (255) 32.6% (36) 28.7% (133) 18.5% (25) 21.1% (86) 50.0% (1) 27.5% 28.8%

George Kirby Batted Ball › Contact

Hide 2026 MLB Percentile | Hide 2026 MLB Average
Year Team GB% LD% FB% PU% SS% Pull% Cent% Oppo% Foul Str% PC% Fl&B% Solid% Brl% ICR
2022 SEA 47.8% 20.8% 23.5% 7.9% 32.5% 36.4% 34.8% 28.8% 23.2% 62.9% 23.5% 5.5% 8.2% 36.9%
2023 SEA 46.0% 20.6% 22.2% 11.3% 32.7% 37.9% 32.1% 30.0% 22.2% 61.6% 25.9% 4.8% 7.5% 38.2%
2024 SEA 43.0% 19.4% 26.8% 10.8% 31.9% 36.7% 31.7% 31.6% 21.4% 64.8% 22.0% 5.5% 7.8% 35.2%
2025 SEA 48.6% 22.9% 21.1% 7.4% 36.9% 34.8% 37.9% 27.4% 19.1% 56.9% 29.1% 6.3% 7.7% 43.0%
2026 SEA 56.9% 13.7% 20.6% 8.8% 27.5% 35.6% 35.6% 28.8% 20.8% 70.6% 21.1% 2.9% 5.4% 29.3%
SP MLB Percentile 97 97 23 37 93 11 72 81 88 96 82 90 81 96
SP MLB AVG 43.4% 22.1% 23.9% 10.6% 35.4% 42.5% 32.7% 24.8% 18.1% 61.1% 24.4% 6.3% 8.3% 38.7%
Career 47.0% 20.0% 23.4% 9.6% 32.6% 36.5% 33.8% 29.6% 21.5% 62.9% 24.5% 5.2% 7.5% 37.1%

George Kirby Batted Ball › Outcomes

Hide 2026 MLB Percentile | Hide 2026 MLB Average
Year Team AVG wOBA BABIP BACON xAVG xwOBA xBABIP xwoBACON EV FB EV LA HR/FB ICR IPA%
2022 SEA .264 .302 .332 .354 .233 .283 .284 .352 88.7 87.9 11.1 14.6% 36.9% 26.0%
2023 SEA .246 .285 .293 .321 .241 .281 .283 .348 89.0 89.2 12.2 17.7% 38.2% 28.3%
2024 SEA .245 .287 .292 .320 .224 .273 .259 .335 88.4 87.9 14.3 14.5% 35.2% 25.7%
2025 SEA .252 .300 .315 .345 .255 .303 .323 .382 90.3 88.9 11.4 20.3% 43.0% 28.8%
2026 SEA .259 .301 .307 .327 .236 .290 .275 .331 89.3 90.7 8.8 14.3% 29.3% 21.6%
SP MLB Percentile 34 61 31 35 60 80 59 80 33 46 86 65 96 90
SP MLB AVG .244 .325 .285 .318 .246 .333 .285 .379 88.6 90.2 14.0 19.1% 38.7% 26.5%
Career .251 .299 .305 .331 .237 .290 .283 .357 89.0 88.6 12.1 16.2% 37.1% 26.6%

George Kirby Approach › Plate Discipline

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Year Team Zone% Str% Swing% O-Sw% Whiff% Foul Str% Con% Z-Con% O-Con% CS% SwStr% CSW% BIP% PLUS% IPR Str-ICR
2022 SEA 50.5% 68.8% 52.6% 31.7% 21.2% 23.2% 78.8% 82.4% 70.4% 16.2% 11.1% 27.3% 18.3% 62.4% 0.56 55.4%
2023 SEA 52.4% 70.9% 54.5% 36.3% 22.9% 22.2% 77.1% 84.0% 62.2% 16.4% 12.5% 28.8% 19.8% 64.5% 0.60 55.7%
2024 SEA 48.2% 68.4% 53.4% 34.8% 24.0% 21.4% 76.0% 83.8% 60.7% 15.1% 12.8% 27.9% 19.1% 62.3% 0.54 54.9%
2025 SEA 46.2% 65.2% 49.0% 32.3% 26.7% 19.1% 73.3% 84.9% 52.2% 16.2% 13.1% 29.2% 16.8% 59.4% 0.55 50.7%
2026 SEA 44.4% 66.7% 51.7% 38.8% 20.9% 20.8% 79.1% 88.6% 65.9% 15.0% 10.8% 25.8% 20.1% 60.2% 0.45 55.0%
SP MLB Percentile 43 87 92 97 26 88 26 21 21 26 41 21 83 81 41 92
SP MLB AVG 44.8% 63.4% 47.2% 31.3% 24.2% 18.1% 75.8% 85.1% 60.0% 16.2% 11.4% 27.6% 17.6% 57.8% 0.47 49.7%
Career 49.0% 68.4% 52.5% 34.5% 23.4% 21.5% 76.6% 84.1% 61.7% 15.8% 12.3% 28.1% 18.8% 62.1% 0.55 54.4%

George Kirby Approach › Locations

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Year Team Zone% aLoc% x-mLoc% gLoc% hiLoc% y-mLoc% loLoc% iLoc% oLoc% mmLoc%
2022 SEA 50.5% 27.7% 28.3% 44.0% 43.0% 26.4% 30.5% 28.9% 42.8% 7.7%
2023 SEA 52.4% 30.5% 29.3% 40.1% 43.8% 25.8% 30.4% 28.2% 42.4% 7.8%
2024 SEA 48.2% 30.4% 27.5% 42.1% 41.3% 24.8% 33.9% 26.5% 46.0% 7.1%
2025 SEA 46.2% 27.7% 27.5% 44.9% 39.5% 21.5% 39.0% 31.3% 41.3% 6.5%
2026 SEA 44.4% 27.7% 29.4% 42.9% 41.9% 21.3% 36.8% 29.1% 41.4% 6.6%
SP MLB Percentile 43 10 26 81 83 67 26 48 36 53
SP MLB AVG 44.8% 35.5% 27.5% 36.9% 35.4% 22.7% 41.9% 29.4% 43.1% 6.6%
Career 49.0% 29.2% 28.3% 42.5% 42.0% 24.4% 33.6% 28.6% 43.1% 7.3%

George Kirby Approach › Counts

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Year Team Early% Behind% 2-Str% Early BIP% F-Str% TF-Str% ECS% 2-Str O-Sw% PAR%
2022 SEA 58.0% 9.2% 32.7% 15.7% 67.6% 55.6% 21.3% 24.7% 19.4%
2023 SEA 60.2% 6.8% 33.1% 17.1% 69.4% 57.3% 22.8% 27.0% 18.4%
2024 SEA 58.8% 8.0% 33.3% 17.0% 66.0% 52.1% 20.5% 26.1% 18.0%
2025 SEA 58.6% 9.5% 32.0% 14.9% 64.3% 53.9% 21.5% 26.8% 20.5%
2026 SEA 61.8% 8.5% 29.7% 17.8% 64.0% 51.8% 20.8% 29.0% 18.2%
SP MLB Percentile 89 94 56 86 71 71 48 72 45
SP MLB AVG 58.6% 12.2% 29.3% 15.1% 61.0% 49.5% 20.8% 26.5% 18.6%
Career 59.3% 8.2% 32.5% 16.4% 66.7% 54.4% 21.5% 26.5% 18.9%

George Kirby PLV

Hide 2026 MLB Percentile | Hide 2026 MLB Average
Year Team P PLV QP% AP% BP% Q-BP% MTK% HP HL PLA
2022 SEA 2,092 5.11 47.9% 21.0% 31.1% 16.8% 7.2% 8.9 +14 2.99
2023 SEA 2,825 5.18 49.3% 19.2% 31.5% 17.8% 8.2% -2.0 +11 2.67
2024 SEA 2,967 5.15 47.8% 18.8% 33.4% 14.4% 6.2% 4.3 +21 2.73
2025 SEA 2,086 5.15 49.8% 16.4% 33.8% 16.0% 5.2% 21.8 +27 2.82
2026 SEA 1,019 5.18 50.3% 16.8% 32.9% 17.4% 4.6% 3.3 +10 2.37
SP MLB Percentile 92 90 87 41 83 83 49 41 10 94
SP MLB AVG 706 4.97 46.5% 17.4% 36.1% 10.4% 4.7% 1.9 +0 3.26
Career 10,989 5.15 48.8% 18.7% 32.5% 16.3% 6.6% 36.4 +82 2.74
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