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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%
7-8 110.0 3.76 1.32 21.8% 5.2%
36th 5
W
31st 78.0
IP
67th 4.42
ERA
100th 1.31
WHIP
98th 21.7%
K%
15th 8.5%
BB%
FB MPH SwStr% CSW% Str-ICR MTK% PLV PLA
96.6 11.6% 26.9% 53.3% 5.5% 5.16 2.61
29th 94.3
FB MPH
100th 11.6%
SwStr%
133rd 27.7%
CSW%
31st 50.0%
Str-ICR
136th 4.9%
MTK%
15th 4.98
PLV
13th 3.29
PLA
The List
Rank
27th

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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 18 18 110.0 7-8 11 3.76 1.32 3.81 3.33 3.71 2.61 21.8% 5.2% 9.9 0.90 .337 13.9% 73.7% 36.1% 50.3% 11.6% 26.9% 0.49 5.16
SP MLB Percentile 51 65 84 75-4 90 67 48 67 80 79 94 51 92 16 77 7 78 56 75 91 49 32 60 93
SP MLB AVG 16 14 78.0 5-5 5 4.42 1.31 4.42 4.38 4.29 3.29 21.7% 8.5% 8.5 1.29 .287 19.6% 72.6% 38.6% 42.9% 11.6% 27.7% 0.47 4.98
Career 130 130 747.2 52-42 74 3.61 1.14 3.41 3.26 3.49 2.76 23.6% 3.8% 8.9 1.00 .310 16.0% 73.4% 37.7% 46.6% 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 18 18 110.0 7-8 11 0 0 1,748 1,181 568 477 124 87 24 2 11 104 25 2 0
SP MLB Percentile 51 65 84 75-4 90 0 0 74 82 39 84 2 2 5 12 41 78 62 55 78
SP MLB AVG 16 14 78.0 5-5 5 0 0 1,287 823 465 332 73 47 14 1 11 73 27 4 2
Career 130 130 747.2 52-42 74 0 0 11,718 8,013 3,706 3,078 740 509 133 15 83 725 118 27 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 21.8% 5.2% .276 .412 .729 .319 .337 .358 .248 .301 .297 .360 89.4 88.9 10.7 3.81
SP MLB Percentile 51 92 12 42 43 45 7 9 41 67 25 56 28 67 81 67
SP MLB AVG 21.7% 8.5% .246 .414 .731 .320 .287 .322 .246 .325 .285 .375 88.5 90.0 13.9 4.42
Career 23.6% 3.8% .255 .396 .684 .299 .310 .336 .239 .289 .286 .356 89.1 88.5 12.2 3.41

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 SEA29.4% (96.6)20.9% (96.9)3.0% (93.1)0.6% (86.0)29.4% (87.2)9.6% (83.9)7.1% (88.8)-- 50.3% 49.7%
SP MLB Percentile 40 (86) 59 (95) 4 (95) 0 (42) 86 (96) 34 (87) 15 (79) - - 67.5% 32.5%
SP MLB AVG 33.5% (94.3) 20.2% (93.7) 16.3% (89.2) 18.0% (86.1) 16.3% (82.2) 14.3% (80.1) 17.0% (86.3) 17.5% (86.4) 28.4% (80.6) 46.6% 53.3%
Career35.9% (96.0)21.0% (96.0)0.6% (93.0)19.5% (86.9)4.4% (87.2)10.7% (82.7)3.3% (87.2)4.5% (85.6)0.0% (73.6) 57.0% 43.0%

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% (75)28.1% (21)17.0% (4)40.0% (2)30.5% (68)25.1% (17)23.4% (16)-- 26.1% 27.8%
SP MLB Percentile 21 (85) 59 (78) 1 (11) 97 (4) 61 (97) 25 (55) 54 (42) - - 18.5% 52.0%
SP MLB AVG 27.1% (42) 26.5% (13) 27.0% (19) 28.5% (28) 27.9% (21) 29.8% (21) 22.9% (27) 21.8% (34) 28.4% (14) 27.3% 27.9%
Career28.2% (708)26.6% (145)15.6% (4)32.1% (255)30.5% (68)28.9% (142)19.3% (33)21.1% (86)50.0% (1) 27.6% 28.8%

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 50.3% 18.3% 23.0% 8.4% 33.4% 33.5% 37.6% 28.9% 20.8% 63.6% 25.6% 4.9% 5.8% 36.1%
SP MLB Percentile 91 94 32 31 78 4 83 88 91 71 33 82 77 75
SP MLB AVG 42.9% 22.3% 24.6% 10.2% 35.8% 42.4% 33.0% 24.5% 18.3% 61.2% 24.7% 6.3% 7.9% 38.6%
Career 46.6% 20.3% 23.6% 9.5% 33.2% 36.1% 34.3% 29.6% 21.4% 62.2% 25.0% 5.4% 7.5% 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 .276 .319 .337 .358 .248 .301 .297 .360 89.4 88.9 10.7 13.9% 36.1% 26.2%
SP MLB Percentile 12 45 7 9 41 67 25 56 28 67 81 78 75 49
SP MLB AVG .246 .320 .287 .322 .246 .325 .285 .375 88.5 90.0 13.9 19.6% 38.6% 26.5%
Career .255 .299 .310 .336 .239 .289 .286 .356 89.1 88.5 12.2 16.0% 37.7% 27.0%

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 46.5% 67.6% 52.2% 37.6% 22.2% 20.8% 77.8% 88.1% 61.4% 15.3% 11.6% 26.9% 19.8% 60.5% 0.49 53.3%
SP MLB Percentile 71 93 95 96 30 91 30 17 34 28 49 32 84 80 60 84
SP MLB AVG 45.0% 63.7% 47.6% 31.6% 24.3% 18.3% 75.7% 85.0% 59.7% 16.1% 11.6% 27.7% 17.7% 58.0% 0.47 50.0%
Career 49.0% 68.4% 52.6% 34.6% 23.4% 21.4% 76.6% 84.3% 61.2% 15.8% 12.3% 28.1% 18.8% 62.1% 0.55 54.2%

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 46.5% 26.9% 30.8% 42.3% 40.9% 21.5% 37.6% 28.5% 40.7% 7.2%
SP MLB Percentile 71 5 11 86 81 69 26 51 27 72
SP MLB AVG 45.0% 35.9% 27.5% 36.6% 35.4% 22.8% 41.7% 28.8% 43.7% 6.6%
Career 49.0% 28.9% 28.6% 42.5% 41.8% 24.3% 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 61.0% 9.1% 30.0% 18.0% 65.0% 52.4% 20.6% 29.0% 19.8%
SP MLB Percentile 86 93 65 93 77 74 48 79 57
SP MLB AVG 58.7% 12.0% 29.4% 15.1% 61.2% 49.6% 20.8% 26.7% 18.9%
Career 59.3% 8.3% 32.4% 16.6% 66.7% 54.3% 21.4% 26.6% 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 1,748 5.16 49.2% 17.4% 33.4% 15.8% 5.5% 15.1 +25 2.61
SP MLB Percentile 74 93 89 35 83 83 31 9 2 94
SP MLB AVG 1,287 4.98 46.1% 17.8% 36.1% 10.0% 4.9% 4.4 +1 3.29
Career 11,718 5.15 48.8% 18.6% 32.6% 16.2% 6.6% 48.1 +97 2.76
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