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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%
8-9 120.0 3.98 1.30 21.5% 5.0%
28th 5
W
20th 83.0
IP
84th 4.40
ERA
96th 1.31
WHIP
100th 21.6%
K%
12th 8.5%
BB%
FB MPH SwStr% CSW% Str-ICR MTK% PLV PLA
96.6 11.7% 27.2% 53.0% 5.8% 5.16 2.50
29th 94.3
FB MPH
94th 11.6%
SwStr%
113th 27.7%
CSW%
31st 50.0%
Str-ICR
147th 4.9%
MTK%
15th 4.97
PLV
16th 3.29
PLA
The List
Rank
48th

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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 20 20 120.0 8-9 12 3.98 1.30 3.93 3.65 3.74 2.50 21.5% 5.0% 9.8 1.13 .334 17.9% 73.9% 36.7% 49.4% 11.7% 27.2% 0.50 5.16
SP MLB Percentile 58 73 89 81-2 91 57 52 62 73 78 92 50 94 16 56 11 57 55 67 87 53 42 65 92
SP MLB AVG 17 15 83.0 5-5 5 4.40 1.31 4.42 4.36 4.27 3.29 21.6% 8.5% 8.5 1.28 .287 19.5% 72.6% 38.5% 42.9% 11.6% 27.7% 0.47 4.97
Career 132 132 757.2 53-43 75 3.65 1.14 3.43 3.31 3.49 2.74 23.5% 3.8% 8.9 1.03 .310 16.6% 73.4% 37.7% 46.5% 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 20 20 120.0 8-9 12 0 0 1,814 1,227 588 497 131 88 26 2 15 107 25 3 0
SP MLB Percentile 58 73 89 81-2 91 0 0 79 86 34 90 2 2 5 13 18 80 62 43 80
SP MLB AVG 17 15 83.0 5-5 5 0 0 1,366 874 493 353 77 50 15 1 11 77 29 4 2
Career 132 132 757.2 53-43 75 0 0 11,784 8,059 3,726 3,098 747 510 135 15 87 728 118 28 13

George Kirby Advanced

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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 21.5% 5.0% .280 .440 .760 .331 .334 .362 .252 .310 .296 .372 89.5 89.5 11.5 3.93
SP MLB Percentile 50 94 14 33 37 39 11 10 42 62 30 52 26 57 74 62
SP MLB AVG 21.6% 8.5% .246 .414 .730 .320 .287 .321 .246 .325 .285 .375 88.5 90.0 13.9 4.42
Career 23.5% 3.8% .255 .401 .690 .301 .310 .337 .239 .290 .285 .358 89.1 88.6 12.3 3.43

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 SEA46.3% (95.3)11.3% (94.7)-21.1% (87.1)-13.3% (80.8)8.0% (86.0)-- 57.6% 42.4%
2023 SEA39.4% (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 SEA34.0% (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 SEA29.0% (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 SEA29.5% (96.6)20.6% (96.9)3.4% (93.2)0.6% (86.0)29.3% (87.2)9.4% (83.9)7.2% (88.7)-- 50.1% 49.9%
SP MLB Percentile 40 (86) 57 (94) 4 (95) 0 (42) 86 (96) 33 (87) 15 (77) - - 65.5% 33.0%
SP MLB AVG 33.5% (94.3) 20.0% (93.7) 16.4% (89.2) 18.0% (86.1) 16.3% (82.2) 14.2% (80.1) 17.0% (86.3) 17.5% (86.4) 28.5% (80.8) 46.7% 53.3%
Career35.9% (96.0)21.0% (96.0)0.6% (93.0)19.4% (86.9)4.5% (87.2)10.7% (82.7)3.4% (87.2)4.5% (85.6)0.0% (73.6) 56.9% 43.1%

George Kirby Pitch › Results

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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 SEA31.0% (155)28.4% (11)-21.7% (39)-28.4% (16)18.0% (12)-- 30.5% 23.1%
2023 SEA28.2% (198)26.3% (43)-33.3% (54)-32.3% (24)15.7% (3)24.4% (30)100.0% (1) 27.5% 30.9%
2024 SEA28.3% (178)25.3% (41)9.1% (0)34.1% (82)-26.6% (34)-19.5% (45)0.0% (0) 27.1% 28.9%
2025 SEA26.1% (102)27.0% (29)-36.3% (78)-29.9% (51)17.4% (2)19.6% (11)- 26.6% 32.6%
2026 SEA24.7% (77)28.4% (21)21.0% (7)40.0% (2)30.6% (69)26.3% (19)22.9% (17)-- 26.2% 28.1%
SP MLB Percentile 23 (85) 60 (75) 11 (18) 97 (4) 63 (97) 29 (57) 50 (42) - - 32.0% 53.5%
SP MLB AVG 27.1% (44) 26.6% (14) 27.2% (20) 28.5% (30) 27.6% (22) 29.8% (22) 23.1% (29) 21.9% (36) 24.7% (14) 27.3% 27.9%
Career28.1% (710)26.7% (145)19.2% (7)32.1% (255)30.6% (69)29.1% (144)19.2% (34)21.1% (86)50.0% (1) 27.6% 28.9%

George Kirby Batted Ball › Contact

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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 49.4% 18.3% 23.3% 8.9% 34.2% 34.0% 38.1% 27.9% 20.5% 63.0% 25.8% 4.7% 6.4% 36.7%
SP MLB Percentile 87 89 37 37 69 4 93 80 85 66 33 81 70 67
SP MLB AVG 42.9% 22.3% 24.6% 10.2% 35.8% 42.3% 33.2% 24.5% 18.3% 61.3% 24.6% 6.3% 7.9% 38.5%
Career 46.5% 20.3% 23.6% 9.6% 33.4% 36.2% 34.4% 29.4% 21.4% 62.1% 25.0% 5.3% 7.5% 37.7%

George Kirby Batted Ball › Outcomes

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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 .280 .331 .334 .362 .252 .310 .296 .372 89.5 89.5 11.5 17.9% 36.7% 26.8%
SP MLB Percentile 14 39 11 10 42 62 30 52 26 57 74 57 67 44
SP MLB AVG .246 .320 .287 .321 .246 .325 .285 .375 88.5 90.0 13.9 19.5% 38.5% 26.5%
Career .255 .301 .310 .337 .239 .290 .285 .358 89.1 88.6 12.3 16.6% 37.7% 27.1%

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 46.9% 67.6% 52.1% 37.2% 22.4% 20.5% 77.6% 87.9% 60.7% 15.5% 11.7% 27.2% 20.0% 60.4% 0.50 53.0%
SP MLB Percentile 79 93 93 94 36 85 36 24 42 32 53 42 86 80 65 84
SP MLB AVG 44.9% 63.7% 47.6% 31.6% 24.3% 18.3% 75.7% 85.0% 59.7% 16.1% 11.6% 27.7% 17.8% 58.0% 0.47 50.0%
Career 49.0% 68.4% 52.6% 34.5% 23.4% 21.4% 76.6% 84.3% 61.1% 15.8% 12.3% 28.1% 18.9% 62.1% 0.55 54.1%

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 46.9% 27.2% 30.9% 42.0% 41.1% 21.4% 37.5% 28.8% 40.4% 7.2%
SP MLB Percentile 79 5 7 82 83 75 27 46 26 74
SP MLB AVG 44.9% 36.0% 27.4% 36.6% 35.4% 22.8% 41.8% 29.0% 43.6% 6.6%
Career 49.0% 29.0% 28.6% 42.4% 41.8% 24.2% 33.9% 28.5% 42.9% 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 61.1% 9.3% 29.7% 17.9% 65.2% 52.3% 20.7% 28.2% 19.9%
SP MLB Percentile 90 91 55 90 83 79 48 68 62
SP MLB AVG 58.8% 12.0% 29.4% 15.1% 61.2% 49.7% 20.7% 26.6% 18.9%
Career 59.3% 8.4% 32.3% 16.6% 66.7% 54.3% 21.4% 26.5% 19.1%

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 1,814 5.16 49.6% 16.9% 33.5% 16.1% 5.8% 21.3 +28 2.50
SP MLB Percentile 79 92 89 33 84 84 26 8 2 92
SP MLB AVG 1,366 4.97 46.0% 17.8% 36.2% 9.8% 4.9% 4.5 +1 3.29
Career 11,784 5.15 48.8% 18.6% 32.6% 16.2% 6.6% 54.3 +100 2.74
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