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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%
7-7 104.0 3.81 1.32 21.1% 5.6%
23rd 4
W
4th 67.0
IP
70th 4.41
ERA
102nd 1.31
WHIP
102nd 21.6%
K%
22nd 8.6%
BB%
FB MPH SwStr% CSW% Str-ICR MTK% PLV PLA
96.7 11.2% 26.5% 53.5% 5.6% 5.15 2.53
26th 94.4
FB MPH
105th 11.5%
SwStr%
134th 27.8%
CSW%
24th 50.1%
Str-ICR
135th 4.9%
MTK%
18th 4.98
PLV
18th 3.26
PLA
The List
Rank
26th

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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 17 17 104.0 7-7 10 3.81 1.32 3.72 3.35 3.69 2.53 21.1% 5.6% 9.8 0.87 .338 14.5% 72.8% 35.2% 52.1% 11.2% 26.5% 0.48 5.15
SP MLB Percentile 73 82 98 84-5 92 64 47 70 79 75 91 49 87 16 71 9 72 49 78 92 45 30 56 90
SP MLB AVG 13 12 67.0 4-4 4 4.41 1.31 4.35 4.31 4.22 3.26 21.6% 8.6% 8.5 1.24 .287 19.0% 72.3% 38.4% 43.0% 11.5% 27.8% 0.47 4.98
Career 129 129 741.2 52-41 73 3.62 1.14 3.39 3.26 3.48 2.75 23.5% 3.9% 8.8 1.00 .310 16.1% 73.2% 37.5% 46.8% 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 17 17 104.0 7-7 10 0 0 1,582 1,069 514 432 113 81 21 1 10 91 24 2 0
SP MLB Percentile 73 82 98 84-5 92 0 0 93 99 25 98 1 1 6 27 30 84 45 45 74
SP MLB AVG 13 12 67.0 4-4 4 0 0 1,096 700 396 283 62 40 12 1 9 62 23 3 2
Career 129 129 741.2 52-41 73 0 0 11,552 7,901 3,652 3,033 729 503 130 14 82 712 117 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 21.1% 5.6% .279 .410 .732 .322 .338 .359 .251 .305 .298 .360 89.2 89.2 10.0 3.72
SP MLB Percentile 49 87 16 46 48 51 9 15 42 70 29 60 35 62 81 70
SP MLB AVG 21.6% 8.6% .245 .409 .726 .320 .287 .320 .245 .325 .285 .373 88.5 89.8 14.0 4.35
Career 23.5% 3.9% .255 .396 .684 .299 .310 .336 .239 .289 .286 .356 89.0 88.5 12.1 3.39

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 29.6% (96.7) 20.9% (96.9) 3.0% (93.2) 0.6% (86.0) 29.3% (87.1) 9.9% (83.8) 6.7% (88.7) - - 50.4% 49.6%
SP MLB Percentile 40 (86) 59 (94) 3 (95) 0 (42) 86 (96) 34 (86) 12 (77) - - 68.5% 31.5%
SP MLB AVG 33.5% (94.4) 20.2% (93.8) 16.4% (89.2) 18.2% (86.1) 16.2% (82.2) 14.6% (80.2) 16.9% (86.3) 17.9% (86.5) 27.6% (80.5) 46.8% 53.1%
Career 36.0% (96.0) 21.0% (96.0) 0.5% (93.0) 19.8% (86.9) 4.0% (86.9) 10.8% (82.6) 3.2% (87.1) 4.6% (85.6) 0.0% (73.6) 57.1% 42.9%

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 23.1% (61) 27.6% (20) 18.8% (4) 40.0% (2) 30.7% (61) 24.8% (16) 24.5% (13) - - 24.9% 28.1%
SP MLB Percentile 14 (83) 53 (82) 5 (12) 95 (4) 62 (97) 25 (58) 60 (40) - - 18.0% 53.5%
SP MLB AVG 27.1% (36) 26.5% (11) 27.3% (16) 28.7% (25) 28.3% (18) 29.9% (18) 23.1% (23) 21.9% (30) 27.3% (11) 27.3% 28.0%
Career 28.0% (694) 26.5% (144) 16.9% (4) 32.1% (255) 30.7% (61) 28.9% (141) 19.5% (30) 21.1% (86) 50.0% (1) 27.5% 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 52.1% 17.3% 22.0% 8.6% 32.3% 34.0% 35.6% 30.5% 21.2% 64.6% 25.6% 4.2% 5.8% 35.2%
SP MLB Percentile 92 92 25 33 82 5 68 93 92 78 39 86 82 78
SP MLB AVG 43.0% 22.3% 24.3% 10.4% 35.7% 42.1% 33.2% 24.7% 18.2% 61.4% 24.5% 6.3% 7.8% 38.4%
Career 46.8% 20.2% 23.4% 9.5% 33.1% 36.2% 33.9% 29.8% 21.5% 62.4% 25.0% 5.3% 7.5% 37.5%

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 .279 .322 .338 .359 .251 .305 .298 .360 89.2 89.2 10.0 14.5% 35.2% 25.7%
SP MLB Percentile 16 51 9 15 42 70 29 60 35 62 81 72 78 57
SP MLB AVG .245 .320 .287 .320 .245 .325 .285 .373 88.5 89.8 14.0 19.0% 38.4% 26.3%
Career .255 .299 .310 .336 .239 .289 .286 .356 89.0 88.5 12.1 16.1% 37.5% 26.9%

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 46.1% 67.6% 52.3% 38.0% 21.4% 21.2% 78.6% 88.9% 62.7% 15.3% 11.2% 26.5% 19.9% 60.4% 0.48 53.5%
SP MLB Percentile 66 92 95 96 26 92 26 13 31 28 45 30 83 80 56 88
SP MLB AVG 45.0% 63.7% 47.5% 31.6% 24.3% 18.2% 75.7% 85.0% 59.7% 16.2% 11.5% 27.8% 17.7% 58.0% 0.47 50.1%
Career 49.0% 68.4% 52.6% 34.6% 23.3% 21.5% 76.7% 84.4% 61.4% 15.8% 12.3% 28.1% 18.8% 62.1% 0.55 54.3%

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 46.1% 27.0% 30.2% 42.8% 41.0% 21.8% 37.2% 29.0% 40.8% 7.0%
SP MLB Percentile 66 6 14 84 83 68 24 48 30 62
SP MLB AVG 45.0% 35.5% 27.5% 36.9% 35.4% 22.8% 41.8% 29.1% 43.4% 6.6%
Career 49.0% 29.0% 28.5% 42.6% 41.8% 24.4% 33.8% 28.6% 43.0% 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 60.7% 8.7% 30.7% 18.3% 65.0% 52.1% 21.1% 29.1% 18.8%
SP MLB Percentile 80 95 74 92 81 75 52 75 46
SP MLB AVG 58.7% 12.0% 29.4% 15.0% 61.1% 49.7% 20.8% 26.8% 18.8%
Career 59.2% 8.3% 32.5% 16.6% 66.7% 54.3% 21.5% 26.6% 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 1,582 5.15 49.3% 17.0% 33.7% 15.7% 5.6% 14.2 +24 2.53
SP MLB Percentile 93 90 85 36 81 81 30 13 2 91
SP MLB AVG 1,096 4.98 46.2% 17.7% 36.1% 10.2% 4.9% 3.4 +1 3.26
Career 11,552 5.15 48.8% 18.6% 32.6% 16.1% 6.6% 47.3 +96 2.75
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