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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%
9-10 147.2 4.02 1.33 20.4% 5.5%
28th 6
W
21st 103.0
IP
87th 4.30
ERA
108th 1.30
WHIP
115th 21.7%
K%
17th 8.5%
BB%
FB MPH SwStr% CSW% Str-ICR MTK% PLV PLA
96.6 11.7% 26.9% 52.9% 5.3% 5.14 2.62
28th 94.3
FB MPH
89th 11.6%
SwStr%
130th 27.7%
CSW%
28th 50.1%
Str-ICR
116th 4.9%
MTK%
17th 4.97
PLV
20th 3.28
PLA
The List
Rank
65th

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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 25 25 147.2 9-10 14 4.02 1.33 4.01 3.63 3.80 2.62 20.4% 5.5% 9.9 1.04 .334 16.5% 73.8% 36.8% 47.3% 11.7% 26.9% 0.49 5.14
SP MLB Percentile 63 77 89 79-6 90 56 45 60 75 74 90 42 91 11 62 6 64 53 69 79 55 33 60 91
SP MLB AVG 21 18 103.0 6-6 7 4.30 1.30 4.36 4.27 4.21 3.28 21.7% 8.5% 8.4 1.24 .287 18.9% 72.8% 38.5% 43.0% 11.6% 27.7% 0.47 4.97
Career 137 137 785.1 54-44 77 3.67 1.15 3.47 3.32 3.51 2.75 23.2% 3.9% 8.9 1.02 .311 16.4% 73.4% 37.7% 46.2% 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

Hide 2026 MLB Percentile | Hide 2026 MLB Average
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 25 25 147.2 9-10 14 0 0 2,282 1,541 744 617 163 112 31 3 17 126 34 3 1
SP MLB Percentile 63 77 89 79-6 90 0 0 82 87 29 90 2 2 4 11 26 76 52 52 67
SP MLB AVG 21 18 103.0 6-6 7 0 0 1,688 1,080 608 435 96 62 18 1 14 95 35 4 3
Career 137 137 785.1 54-44 77 0 0 12,252 8,373 3,882 3,218 779 534 140 16 89 747 127 28 14

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 20.4% 5.5% .282 .434 .758 .331 .334 .359 .256 .314 .298 .370 89.4 89.5 12.3 4.01
SP MLB Percentile 42 91 10 33 35 37 6 10 35 60 28 54 25 57 66 60
SP MLB AVG 21.7% 8.5% .245 .408 .724 .318 .287 .320 .246 .324 .285 .374 88.5 89.9 13.8 4.36
Career 23.2% 3.9% .257 .401 .692 .302 .311 .337 .241 .292 .286 .358 89.1 88.6 12.4 3.47

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 SEA28.9% (96.6)20.5% (96.8)3.7% (93.0)0.4% (86.0)28.4% (87.3)10.3% (83.9)6.7% (88.7)1.1% (87.4)- 49.4% 50.6%
SP MLB Percentile 39 (86) 58 (95) 5 (93) 0 (42) 85 (96) 39 (89) 14 (80) 2 (64) - 65.5% 33.5%
SP MLB AVG 34.0% (94.3) 19.7% (93.8) 16.6% (89.3) 17.4% (86.1) 16.6% (82.2) 13.7% (80.0) 16.5% (86.1) 17.3% (86.4) 29.6% (80.7) 46.7% 53.3%
Career35.5% (96.0)21.0% (96.0)0.8% (92.9)18.7% (86.9)5.3% (87.3)10.8% (82.7)3.4% (87.3)4.5% (85.7)0.0% (73.6) 56.5% 43.5%

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 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 SEA24.4% (94)27.8% (25)29.4% (14)40.0% (2)29.6% (83)27.8% (26)21.7% (20)16.0% (3)- 25.8% 28.0%
SP MLB Percentile 18 (84) 53 (75) 69 (37) 99 (4) 54 (96) 33 (66) 38 (42) 17 (6) - 28.0% 51.5%
SP MLB AVG 27.1% (54) 26.8% (17) 26.9% (23) 28.0% (36) 27.7% (27) 29.6% (25) 23.3% (36) 22.5% (43) 24.7% (16) 27.2% 28.0%
Career28.0% (727)26.6% (149)27.1% (14)32.1% (255)29.6% (83)29.2% (151)19.0% (37)20.9% (89)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 47.3% 19.7% 22.8% 10.2% 34.3% 35.5% 37.4% 27.1% 20.7% 63.0% 26.3% 4.9% 5.8% 36.8%
SP MLB Percentile 79 80 26 53 69 5 88 79 88 68 28 77 84 69
SP MLB AVG 43.0% 22.2% 24.8% 10.1% 35.8% 42.5% 33.3% 24.3% 18.3% 61.3% 24.9% 6.2% 7.6% 38.5%
Career 46.2% 20.5% 23.5% 9.8% 33.4% 36.4% 34.4% 29.2% 21.4% 62.2% 25.1% 5.3% 7.4% 37.7%

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 .282 .331 .334 .359 .256 .314 .298 .370 89.4 89.5 12.3 16.5% 36.8% 27.1%
SP MLB Percentile 10 37 6 10 35 60 28 54 25 57 66 64 69 40
SP MLB AVG .245 .318 .287 .320 .246 .324 .285 .374 88.5 89.9 13.8 18.9% 38.5% 26.5%
Career .257 .302 .311 .337 .241 .292 .286 .358 89.1 88.6 12.4 16.4% 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 45.7% 67.5% 52.3% 38.0% 22.4% 20.7% 77.6% 88.0% 61.7% 15.2% 11.7% 26.9% 19.9% 60.4% 0.49 52.9%
SP MLB Percentile 64 92 94 97 32 88 32 21 37 27 55 33 86 83 60 85
SP MLB AVG 44.8% 63.8% 47.7% 31.7% 24.4% 18.3% 75.6% 85.2% 59.3% 16.1% 11.6% 27.7% 17.8% 58.1% 0.47 50.1%
Career 48.8% 68.3% 52.6% 34.8% 23.4% 21.4% 76.6% 84.5% 61.3% 15.8% 12.3% 28.1% 18.9% 62.0% 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 45.7% 26.9% 30.0% 43.1% 41.8% 21.4% 36.7% 29.7% 40.3% 6.8%
SP MLB Percentile 64 5 13 87 86 75 19 59 23 55
SP MLB AVG 44.8% 36.2% 27.4% 36.5% 35.3% 22.8% 41.9% 28.9% 43.8% 6.6%
Career 48.8% 28.9% 28.5% 42.6% 42.0% 24.1% 33.9% 28.7% 42.7% 7.2%

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 60.5% 8.9% 30.9% 17.8% 65.3% 52.5% 20.7% 29.4% 17.9%
SP MLB Percentile 86 95 74 92 85 78 48 81 40
SP MLB AVG 58.7% 11.9% 29.5% 15.1% 61.3% 49.7% 20.7% 26.7% 18.8%
Career 59.3% 8.3% 32.5% 16.6% 66.7% 54.3% 21.4% 26.8% 18.8%

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 2,282 5.14 48.8% 17.5% 33.7% 15.0% 5.3% 25.3 +35 2.62
SP MLB Percentile 82 91 85 39 82 82 39 6 1 90
SP MLB AVG 1,688 4.97 45.9% 17.9% 36.2% 9.7% 4.9% 5.0 +1 3.28
Career 12,252 5.15 48.7% 18.6% 32.7% 16.0% 6.5% 58.3 +107 2.75
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