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Josh Simpson

#37 - Relief Pitcher

Seattle Mariners

Bats / Throws Left / Left
Date of Birth 8/19/1997 (28)
Height, Weight 6'2", 190 lb
Hometown Stafford, CT

2026 Season Stats

Needs more playing time to qualify
MLB Rank MLB Average
Sv IP ERA WHIP K% BB%
0 2.1 7.71 1.29 30.0% 10.0%
160th 1
Sv
354th 24.0
IP
321st 4.43
ERA
153rd 1.40
WHIP
39th 22.2%
K%
194th 10.4%
BB%
FB MPH SwStr% CSW% Str-ICR MTK% PLV PLA
93.3 12.5% 27.5% 55.0% 2.5% 5.22 2.60
201st 94.3
FB MPH
141st 11.9%
SwStr%
206th 28.5%
CSW%
47th 50.4%
Str-ICR
38th 4.6%
MTK%
11th 4.93
PLV
31st 3.50
PLA

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Josh Simpson Overview

Hide 2026 MLB Percentile | Hide 2026 MLB Average
Year Team G GS IP W-L Sv Hld ERA WHIP xERA FIP xFIP PLA K% BB% H/9 HR/9 BABIP HR/FB% LOB% ICR GB% SwStr% CSW% IPR PLV
2025 MIA 31 0 30.2 4-2 0 2 7.34 1.83 4.56 5.39 4.29 4.30 23.8% 14.6% 10.0 1.47 .345 38.5% 59.6% 37.1% 60.7% 11.9% 28.9% 0.54 4.87
2026 SEA 3 0 2.1 0-0 0 0 7.71 1.29 9.34 14.05 6.11 2.60 30.0% 10.0% 7.7 7.71 .000 50.0% 100.0% 33.3% 16.7% 12.5% 27.5% 0.55 5.22
RP MLB Percentile 1 0 0 0-66 0 0 8 55 1 0 7 90 88 43 54 0 100 1 99 73 1 59 41 71 96
RP MLB AVG 19 1 24.0 1-1 1 3 4.43 1.40 4.32 4.31 4.36 3.50 22.2% 10.4% 8.5 1.08 .293 17.6% 71.8% 37.4% 43.6% 11.9% 28.5% 0.49 4.93
Career 34 0 33.0 4-2 0 2 7.36 1.79 4.90 5.89 4.38 4.18 24.2% 14.3% 9.8 1.91 .330 41.2% 61.3% 36.8% 57.9% 11.9% 28.8% 0.54 4.89

Josh Simpson Repertoire

2025 2026 All
Hide MLB Percentile | Hide MLB Average

Josh Simpson Game Log

Josh Simpson 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
2025 MIA 31 0 30.2 4-2 0 0 2 613 383 230 151 34 23 5 1 5 36 22 3 3
2026 SEA 3 0 2.1 0-0 0 0 0 40 26 14 10 2 0 0 0 2 3 1 0 0
RP MLB Percentile 1 0 0 0-66 0 0 0 0 0 100 0 99 100 94 29 40 1 98 64 53
RP MLB AVG 19 1 24.0 1-1 0 1 3 402 255 148 103 22 14 4 0 3 23 10 1 1
Career 34 0 33.0 4-2 0 0 2 653 409 244 161 36 23 5 1 7 39 23 3 3

Josh Simpson 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
2025 MIA 23.8% 14.6% .272 .448 .841 .367 .345 .382 .227 .329 .279 .368 90.1 90.7 4.9 4.56
2026 SEA 30.0% 10.0% .222 .889 1.189 .484 .000 .333 .222 .484 .000 .690 98.1 102.5 31.7 9.34
RP MLB Percentile 88 43 62 0 1 2 100 38 65 1 100 0 0 0 0 1
RP MLB AVG 22.2% 10.4% .242 .391 .720 .320 .293 .322 .238 .323 .284 .365 87.9 89.4 13.2 4.32
Career 24.2% 14.3% .269 .478 .866 .380 .330 .379 .227 .344 .266 .393 90.6 93.5 6.6 4.90

Josh Simpson 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%
2025 MIA 11.6% (94.3) 22.2% (94.0) - 6.0% (87.9) 25.4% (82.3) 23.7% (80.6) 10.9% (89.2) - - 33.8% 66.1%
2026 SEA 2.5% (93.1) 50.0% (93.3) - - 37.5% (82.4) 10.0% (81.5) - - - 52.5% 47.5%
RP MLB Percentile 0 (24) 90 (37) - - 88 (47) 31 (58) - - - 67.2% 32.5%
RP MLB AVG 37.5% (94.3) 25.6% (93.9) 21.6% (89.4) 26.2% (85.4) 21.9% (82.5) 17.6% (79.8) 18.4% (86.2) 19.8% (86.5) 31.8% (68.1) 47.6% 52.2%
Career 11.0% (94.3) 23.9% (93.9) - 5.7% (87.9) 26.2% (87.9) 22.8% (80.6) 10.3% (89.2) - - 34.9% 64.9%

Josh Simpson 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%
2025 MIA 23.9% (10) 25.0% (5) - 27.0% (5) 34.6% (29) 35.9% (17) 14.9% (7) - - 24.6% 31.1%
2026 SEA 0.0% (0) 30.0% (1) - - 33.3% (4) 0.0% (0) - - - 28.6% 26.3%
RP MLB Percentile 0 (0) 62 (70) - - 73 (64) 0 (0) - - - 55.9% 33.3%
RP MLB AVG 26.9% (14) 27.4% (6) 27.1% (7) 29.3% (12) 28.2% (11) 27.0% (7) 21.8% (10) 24.4% (13) 23.3% (6) 27.9% 28.6%
Career 23.6% (10) 25.6% (6) - 27.0% (5) 34.5% (33) 34.9% (17) 14.9% (7) - - 25.0% 30.9%

Josh Simpson 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
2025 MIA 60.7% 20.2% 14.6% 4.5% 30.3% 43.8% 38.2% 18.0% 19.1% 62.9% 23.6% 6.7% 6.7% 37.1%
2026 SEA 16.7% 0.0% 66.7% 16.7% 33.3% 50.0% 33.3% 16.7% 22.5% 66.7% 0.0% 0.0% 33.3% 33.3%
RP MLB Percentile 1 100 100 88 53 86 49 10 97 75 100 95 0 73
RP MLB AVG 43.6% 21.8% 24.2% 10.3% 34.7% 41.4% 33.6% 25.1% 17.7% 62.3% 24.7% 5.9% 7.2% 37.4%
Career 57.9% 18.9% 17.9% 5.3% 30.5% 44.2% 37.9% 17.9% 19.3% 63.1% 22.1% 6.3% 8.4% 36.8%

Josh Simpson 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%
2025 MIA .272 .367 .345 .382 .227 .329 .279 .368 90.1 90.7 4.9 38.5% 37.1% 21.9%
2026 SEA .222 .484 .000 .333 .222 .484 .000 .690 98.1 102.5 31.7 50.0% 33.3% 20.0%
RP MLB Percentile 62 2 100 38 65 1 100 0 0 0 0 1 73 82
RP MLB AVG .242 .320 .293 .322 .238 .323 .284 .365 87.9 89.4 13.2 17.6% 37.4% 24.7%
Career .269 .380 .330 .379 .227 .344 .266 .393 90.6 93.5 6.6 41.2% 36.8% 21.7%

Josh Simpson 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
2025 MIA 47.8% 62.5% 45.5% 30.0% 26.2% 19.1% 73.8% 85.7% 51.0% 17.0% 11.9% 28.9% 14.5% 56.9% 0.54 51.7%
2026 SEA 57.5% 65.0% 50.0% 23.5% 25.0% 22.5% 75.0% 81.3% 50.0% 15.0% 12.5% 27.5% 15.0% 60.0% 0.55 55.0%
RP MLB Percentile 99 71 79 7 50 97 50 70 80 27 59 41 18 74 71 86
RP MLB AVG 44.4% 63.2% 46.7% 31.0% 25.5% 17.7% 74.5% 84.0% 58.5% 16.5% 11.9% 28.5% 17.0% 57.8% 0.49 50.4%
Career 48.4% 62.6% 45.8% 29.7% 26.1% 19.3% 73.9% 85.4% 51.0% 16.8% 11.9% 28.8% 14.5% 57.1% 0.54 51.9%

Josh Simpson Approach › Locations

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Year Team Zone% aLoc% x-mLoc% gLoc% hiLoc% y-mLoc% loLoc% iLoc% oLoc% mmLoc%
2025 MIA 47.8% 32.2% 23.5% 44.3% 20.6% 27.0% 52.5% 33.3% 43.1% 8.2%
2026 SEA 57.5% 37.5% 17.5% 45.0% 32.5% 22.5% 45.0% 25.0% 57.5% 5.0%
RP MLB Percentile 99 66 100 83 32 51 73 12 99 14
RP MLB AVG 44.4% 34.6% 26.9% 38.5% 36.2% 22.8% 41.0% 30.1% 43.0% 6.5%
Career 48.4% 32.5% 23.2% 44.3% 21.3% 26.7% 52.0% 32.8% 44.0% 8.0%

Josh Simpson Approach › Counts

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Year Team Early% Behind% 2-Str% Early BIP% F-Str% TF-Str% ECS% 2-Str O-Sw% PAR%
2025 MIA 56.3% 14.0% 30.7% 13.3% 56.1% 45.2% 22.6% 27.7% 19.1%
2026 SEA 52.5% 10.0% 37.5% 23.8% 70.0% 60.0% 23.8% 20.0% 20.0%
RP MLB Percentile 1 82 99 99 96 95 77 10 58
RP MLB AVG 58.5% 12.6% 29.5% 14.3% 60.3% 49.7% 21.2% 26.2% 19.2%
Career 56.0% 13.8% 31.1% 13.9% 57.0% 46.1% 22.7% 27.1% 19.2%

Josh Simpson PLV

Hide 2026 MLB Percentile | Hide 2026 MLB Average
Year Team P PLV QP% AP% BP% Q-BP% MTK% HP HL PLA
2025 MIA 613 4.87 47.8% 14.7% 37.5% 10.3% 5.9% 13.1 +6 4.30
2026 SEA 40 5.22 42.5% 27.5% 30.0% 12.5% 2.5% 2.0 -1 2.60
RP MLB Percentile 0 96 16 99 95 95 87 37 55 90
RP MLB AVG 402 4.93 46.0% 17.0% 37.0% 9.1% 4.6% 0.6 +0 3.50
Career 653 4.89 47.5% 15.5% 37.1% 10.4% 5.7% 15.1 +6 4.18
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