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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%
5-3 62.2 3.45 1.18 20.7% 6.4%
9th 2
W
3rd 37.0
IP
67th 4.64
ERA
70th 1.37
WHIP
111th 21.4%
K%
38th 9.5%
BB%
FB MPH SwStr% CSW% Str-ICR MTK% PLV PLA
96.7 10.9% 25.4% 55.6% 4.6% 5.19 2.33
28th 94.3
FB MPH
114th 11.5%
SwStr%
163rd 27.7%
CSW%
13th 49.7%
Str-ICR
105th 4.7%
MTK%
20th 4.97
PLV
13th 3.30
PLA
The List
Rank
19th

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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 10 10 62.2 5-3 5 3.45 1.18 3.13 3.55 3.71 2.33 20.7% 6.4% 8.3 0.86 .297 15.4% 76.9% 28.2% 57.2% 10.9% 25.4% 0.45 5.19
SP MLB Percentile 81 88 98 90-21 84 66 65 83 70 69 93 45 80 48 65 39 61 64 95 96 41 19 41 89
SP MLB AVG 8 7 37.0 2-2 2 4.64 1.37 4.49 4.45 4.28 3.30 21.4% 9.5% 8.6 1.21 .287 18.9% 72.3% 38.7% 44.1% 11.5% 27.7% 0.47 4.97
Career 122 122 700.1 50-37 68 3.57 1.12 3.32 3.28 3.47 2.74 23.6% 3.8% 8.7 1.00 .304 16.3% 73.6% 37.1% 46.9% 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 10 10 62.2 5-3 5 0 0 927 617 311 251 58 44 8 0 6 52 16 2 0
SP MLB Percentile 81 88 98 90-21 84 0 0 97 98 11 99 3 1 29 38 25 82 35 26 55
SP MLB AVG 8 7 37.0 2-2 2 0 0 614 390 224 158 34 22 7 0 5 34 14 2 1
Career 122 122 700.1 50-37 68 0 0 10,897 7,449 3,449 2,852 674 466 117 13 78 673 109 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 20.7% 6.4% .249 .361 .664 .299 .297 .320 .224 .284 .264 .323 89.1 90.8 9.7 3.13
SP MLB Percentile 45 80 45 67 63 64 39 46 72 83 71 83 38 49 78 83
SP MLB AVG 21.4% 9.5% .243 .401 .723 .323 .287 .318 .245 .331 .285 .376 88.6 90.3 13.5 4.49
Career 23.6% 3.8% .250 .391 .676 .299 .304 .331 .236 .289 .282 .356 89.0 88.6 12.2 3.32

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 31.7% (96.7) 20.8% (96.8) 3.7% (92.7) 1.1% (86.0) 25.5% (86.8) 9.3% (83.6) 8.0% (88.7) - - 52.5% 47.5%
SP MLB Percentile 45 (86) 61 (93) 3 (92) 0 (43) 85 (94) 26 (86) 16 (75) - - 75.6% 23.9%
SP MLB AVG 33.1% (94.3) 20.4% (93.7) 16.7% (89.2) 18.7% (86.2) 16.2% (82.3) 14.6% (80.0) 16.8% (86.3) 21.4% (86.5) 27.6% (80.5) 46.7% 53.3%
Career 36.6% (95.9) 21.0% (96.0) 0.4% (92.6) 21.0% (86.9) 2.2% (86.9) 10.8% (82.6) 3.1% (87.0) 4.9% (85.6) 0.0% (73.6) 57.6% 42.4%

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 22.1% (38) 25.9% (11) 17.6% (2) 40.0% (2) 33.1% (34) 17.4% (6) 23.0% (8) - - 23.6% 27.3%
SP MLB Percentile 15 (86) 37 (78) 8 (10) 91 (6) 74 (95) 8 (37) 42 (40) - - 13.7% 42.9%
SP MLB AVG 27.0% (20) 26.7% (7) 26.5% (11) 29.7% (16) 28.0% (12) 29.3% (11) 23.3% (15) 23.0% (22) 27.3% (11) 27.4% 27.8%
Career 28.2% (671) 26.3% (135) 15.6% (2) 32.1% (255) 33.1% (34) 28.6% (131) 18.6% (25) 21.1% (86) 50.0% (1) 27.5% 28.9%

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 57.2% 11.7% 21.7% 9.4% 26.7% 34.8% 34.8% 30.4% 21.7% 71.6% 19.4% 3.3% 5.6% 28.2%
SP MLB Percentile 96 98 33 49 93 11 66 85 90 95 88 87 80 95
SP MLB AVG 44.1% 21.9% 23.6% 10.3% 35.2% 42.7% 32.7% 24.7% 18.1% 61.1% 24.4% 6.3% 8.2% 38.7%
Career 46.9% 19.9% 23.5% 9.7% 32.6% 36.5% 33.8% 29.8% 21.5% 62.9% 24.4% 5.3% 7.6% 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 .249 .299 .297 .320 .224 .284 .264 .323 89.1 90.8 9.7 15.4% 28.2% 20.3%
SP MLB Percentile 45 64 39 46 72 83 71 83 38 49 78 61 95 90
SP MLB AVG .243 .323 .287 .318 .245 .331 .285 .376 88.6 90.3 13.5 18.9% 38.7% 26.3%
Career .250 .299 .304 .331 .236 .289 .282 .356 89.0 88.6 12.2 16.3% 37.1% 26.5%

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 44.0% 66.6% 52.1% 38.7% 20.9% 21.7% 79.1% 88.7% 65.7% 14.5% 10.9% 25.4% 19.5% 60.3% 0.45 55.6%
SP MLB Percentile 39 87 93 96 26 90 26 21 22 20 41 19 78 80 41 94
SP MLB AVG 44.6% 63.3% 47.1% 31.4% 24.4% 18.1% 75.6% 84.9% 59.8% 16.2% 11.5% 27.7% 17.5% 57.8% 0.47 49.7%
Career 49.0% 68.4% 52.6% 34.4% 23.4% 21.5% 76.6% 84.1% 61.7% 15.8% 12.3% 28.1% 18.7% 62.2% 0.55 54.5%

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 44.0% 27.7% 29.1% 43.1% 43.1% 21.4% 35.5% 29.0% 41.9% 6.5%
SP MLB Percentile 39 11 29 84 86 65 18 44 41 50
SP MLB AVG 44.6% 35.5% 27.5% 37.0% 35.2% 22.6% 42.2% 29.4% 43.1% 6.5%
Career 49.0% 29.2% 28.3% 42.6% 42.1% 24.5% 33.4% 28.6% 43.2% 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% 8.8% 30.5% 17.4% 64.5% 51.8% 20.1% 29.0% 18.4%
SP MLB Percentile 80 91 63 83 72 66 36 69 49
SP MLB AVG 58.5% 12.3% 29.4% 14.9% 61.0% 49.7% 20.9% 26.7% 18.7%
Career 59.1% 8.3% 32.6% 16.4% 66.8% 54.4% 21.4% 26.4% 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 927 5.19 50.1% 17.2% 32.7% 17.5% 4.6% 3.0 +6 2.33
SP MLB Percentile 97 89 85 46 83 83 46 43 15 93
SP MLB AVG 614 4.97 46.5% 17.4% 36.1% 10.3% 4.7% 1.7 +0 3.30
Career 10,897 5.15 48.8% 18.7% 32.5% 16.3% 6.6% 36.1 +78 2.74
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