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Josh Simpson

#37 - Relief Pitcher

Seattle Mariners

Bats / Throws Left / Left
Date of Birth 8/19/1997 (29)
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 7.1 9.82 2.05 26.3% 10.5%
212th 3
Sv
355th 42.0
IP
353rd 4.24
ERA
347th 1.35
WHIP
89th 22.5%
K%
226th 9.8%
BB%
FB MPH SwStr% CSW% Str-ICR MTK% PLV PLA
92.9 8.5% 27.5% 50.3% 2.6% 5.01 4.11
244th 94.6
FB MPH
322nd 12.2%
SwStr%
218th 28.5%
CSW%
204th 51.1%
Str-ICR
32nd 4.7%
MTK%
115th 4.94
PLV
278th 3.55
PLA

Articles

8/19/2026Fantasy Baseball Relief Pitcher Roundup: 8/18Rick Graham

8/9/2026Fantasy Baseball Relief Pitcher Roundup: 8/8Rick Graham

8/7/2026Fantasy Baseball Relief Pitcher Roundup: 8/6Rick Graham

8/5/2026Fantasy Baseball Relief Pitcher Roundup: 8/4Rick Graham

6/29/2026Fantasy Baseball Relief Pitcher Roundup: 6/28Rick Graham

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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 8 0 7.1 0-0 0 0 9.82 2.05 6.58 9.70 5.43 4.11 26.3% 10.5% 13.5 4.91 .368 44.4% 76.9% 34.8% 26.1% 8.5% 27.5% 0.46 5.01
RP MLB Percentile 2 0 0 0-81 0 0 1 2 4 0 10 22 74 35 2 0 6 1 68 65 3 8 37 38 64
RP MLB AVG 33 2 42.0 2-2 3 6 4.24 1.35 4.23 4.26 4.31 3.55 22.5% 9.8% 8.3 1.13 .289 17.8% 72.7% 36.9% 43.6% 12.2% 28.5% 0.50 4.94
Career 39 0 38.0 4-2 0 2 7.82 1.87 4.95 6.15 4.48 4.26 24.3% 13.8% 10.7 2.13 .350 40.9% 62.5% 36.6% 53.6% 11.2% 28.6% 0.52 4.90

Josh Simpson Repertoire

2025 2026 All
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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 8 0 7.1 0-0 0 0 0 153 93 60 38 11 6 1 0 4 10 4 1 0
RP MLB Percentile 2 0 0 0-81 0 0 0 0 0 100 0 98 97 96 43 46 3 97 58 73
RP MLB AVG 33 2 42.0 2-2 0 3 6 715 457 258 183 39 26 7 1 5 41 17 2 2
Career 39 0 38.0 4-2 0 0 2 766 476 290 189 45 29 6 1 9 46 26 4 3

Josh Simpson Advanced

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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 26.3% 10.5% .333 .727 1.148 .482 .368 .478 .253 .402 .263 .510 92.3 97.2 26.6 6.58
RP MLB Percentile 74 35 3 0 0 0 6 1 31 4 68 0 2 1 2 4
RP MLB AVG 22.5% 9.8% .241 .391 .714 .315 .289 .320 .236 .317 .280 .360 87.7 89.2 13.3 4.23
Career 24.3% 13.8% .285 .506 .905 .393 .350 .402 .232 .346 .276 .399 90.5 93.4 9.3 4.95

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 MIA11.6% (94.3)22.2% (94.0)-6.0% (87.9)25.5% (82.3)23.7% (80.6)10.9% (89.2)-- 33.8% 66.1%
2026 SEA4.6% (92.9)38.6% (92.9)--27.5% (80.8)25.5% (80.0)3.9% (87.1)-- 43.1% 56.9%
RP MLB Percentile 0 (21) 79 (30) - - 71 (23) 80 (38) 11 (56) - - 31.8% 67.9%
RP MLB AVG 38.2% (94.6) 26.3% (93.9) 20.3% (89.4) 25.5% (85.7) 21.3% (82.5) 16.4% (79.7) 17.1% (86.2) 17.4% (86.6) 32.8% (68.2) 48.1% 51.7%
Career10.2% (94.2)25.5% (93.7)-4.8% (87.9)25.9% (82.0)24.0% (80.4)9.5% (89.0)-- 35.6% 64.2%

Josh Simpson 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%
2025 MIA23.9% (10)25.0% (5)-27.0% (5)34.6% (29)35.9% (17)14.9% (7)-- 24.6% 31.1%
2026 SEA14.3% (1)32.2% (2)--19.0% (5)33.3% (5)16.7% (0)-- 30.3% 25.3%
RP MLB Percentile 2 (0) 80 (75) - - 12 (66) 74 (48) 27 (89) - - 73.0% 22.5%
RP MLB AVG 27.0% (26) 27.4% (10) 26.5% (12) 29.4% (22) 28.2% (16) 27.1% (11) 21.5% (16) 23.3% (17) 22.0% (9) 27.8% 28.9%
Career23.1% (11)27.2% (7)-27.0% (5)31.3% (34)35.3% (22)15.1% (7)-- 26.0% 30.1%

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 26.1% 17.4% 39.1% 17.4% 39.1% 47.8% 34.8% 17.4% 18.3% 65.2% 13.0% 4.3% 17.4% 34.8%
RP MLB Percentile 3 82 97 92 22 88 60 6 50 68 99 71 1 65
RP MLB AVG 43.6% 21.6% 24.6% 10.2% 34.7% 41.0% 33.8% 25.2% 18.2% 62.8% 24.4% 5.8% 7.0% 36.9%
Career 53.6% 19.6% 19.6% 7.1% 32.1% 44.6% 37.5% 17.9% 18.9% 63.5% 21.4% 6.3% 8.9% 36.6%

Josh Simpson 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%
2025 MIA .272 .367 .345 .382 .227 .329 .279 .368 90.1 90.7 4.9 38.5% 37.1% 21.9%
2026 SEA .333 .482 .368 .478 .253 .402 .263 .510 92.3 97.2 26.6 44.4% 34.8% 21.1%
RP MLB Percentile 3 0 6 1 31 4 68 0 2 1 2 1 65 77
RP MLB AVG .241 .315 .289 .320 .236 .317 .280 .360 87.7 89.2 13.3 17.8% 36.9% 24.5%
Career .285 .393 .350 .402 .232 .346 .276 .399 90.5 93.4 9.3 40.9% 36.6% 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 46.4% 60.8% 41.8% 24.4% 20.3% 18.3% 79.7% 86.4% 65.0% 19.0% 8.5% 27.5% 15.0% 53.6% 0.46 50.3%
RP MLB Percentile 75 16 6 4 17 50 17 31 21 89 8 37 17 4 38 42
RP MLB AVG 44.5% 63.8% 47.4% 31.8% 25.6% 18.2% 74.4% 83.8% 58.6% 16.3% 12.2% 28.5% 17.1% 58.4% 0.50 51.1%
Career 47.5% 62.1% 44.8% 28.9% 25.1% 18.9% 74.9% 85.8% 53.4% 17.4% 11.2% 28.6% 14.6% 56.3% 0.52 51.4%

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 46.4% 33.3% 22.9% 43.8% 26.1% 28.1% 45.8% 24.8% 52.3% 5.2%
RP MLB Percentile 75 41 90 81 7 6 74 12 96 10
RP MLB AVG 44.5% 34.5% 27.0% 38.5% 36.4% 22.9% 40.8% 29.8% 43.2% 6.6%
Career 47.5% 32.4% 23.4% 44.2% 21.7% 27.2% 51.1% 31.6% 45.0% 7.6%

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 54.2% 10.5% 35.3% 12.0% 66.7% 61.1% 27.7% 20.4% 18.5%
RP MLB Percentile 3 75 96 17 88 99 98 6 41
RP MLB AVG 58.5% 12.1% 29.9% 14.4% 60.9% 50.2% 21.2% 26.8% 19.1%
Career 55.9% 13.3% 31.6% 13.1% 58.1% 48.2% 23.6% 26.0% 19.0%

Josh Simpson PLV

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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 153 5.01 43.1% 23.5% 33.3% 9.8% 2.6% 7.0 +3 4.11
RP MLB Percentile 0 64 21 99 81 81 90 19 32 22
RP MLB AVG 715 4.94 46.0% 17.4% 36.6% 9.3% 4.7% 0.8 0 3.55
Career 766 4.90 46.9% 16.4% 36.7% 10.2% 5.2% 20.2 +9 4.26
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