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Seth Martinez

Relief Pitcher

Boston Red Sox

Bats / Throws Right / Right
Date of Birth 8/29/1994 (31)
Height, Weight 6'2", 193 lb
Hometown Peoria, AZ

2026 Season Stats

Needs more playing time to qualify
MLB Rank MLB Average
Sv IP ERA WHIP K% BB%
0 1.0 9.00 2.00 16.7% 0.0%
212th 3
Sv
355th 42.0
IP
347th 4.24
ERA
344th 1.35
WHIP
290th 22.4%
K%
1st 9.9%
BB%
FB MPH SwStr% CSW% Str-ICR MTK% PLV PLA
89.1 18.2% 45.5% 59.1% 4.5% 5.54 1.84
339th 94.6
FB MPH
10th 12.1%
SwStr%
1st 28.5%
CSW%
6th 51.1%
Str-ICR
171st 4.6%
MTK%
1st 4.94
PLV
1st 3.46
PLA

Articles

8/12/2026Fantasy Baseball Relief Pitcher Roundup: 8/11Rick Graham

9/26/2024Fantasy Baseball Relief Pitcher Rankings - 9/26/24 Depth ChartJustin Perri

9/25/2024Fantasy Baseball Relief Pitcher Rankings - 9/25/24 Depth ChartScott McDermott

8/22/2024Fantasy Baseball Relief Pitcher Rankings - 8/22/24 Depth ChartJustin Perri

8/1/2024Fantasy Baseball Relief Pitcher Rankings - 08/01/24 Depth ChartJustin Perri

See More Articles
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Seth Martinez 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
2021 HOU 3 0 3.0 0-0 0 0 15.00 2.67 9.25 4.17 5.96 4.98 18.8% 18.8% 15.0 0.00 .500 0.0% 37.5% 60.0% 30.0% 9.5% 30.2% 0.49 4.94
2022 HOU 29 0 38.2 1-1 0 3 2.09 1.03 2.49 3.32 3.44 3.20 24.5% 9.0% 6.1 0.70 .235 15.8% 84.2% 27.5% 43.6% 12.2% 30.1% 0.57 4.96
2023 HOU 35 0 43.0 2-3 1 2 5.23 1.49 5.28 4.42 4.63 4.02 23.1% 9.7% 9.4 1.05 .333 17.2% 65.1% 44.0% 41.1% 11.6% 28.4% 0.49 4.93
2024 HOU 44 0 52.2 3-2 1 3 3.59 1.27 4.54 4.79 4.51 3.49 16.2% 8.1% 8.4 1.20 .269 21.9% 76.8% 35.4% 42.0% 10.5% 27.9% 0.43 4.92
2025 MIA 6 0 6.2 0-0 0 0 5.40 1.05 7.91 7.49 6.45 3.73 14.8% 11.1% 5.4 2.70 .111 25.0% 71.4% 45.0% 15.8% 10.0% 25.8% 0.43 4.94
2026 BOS 1 0 1.0 0-0 0 0 9.00 2.00 10.26 4.08 4.08 1.84 16.7% 0.0% 18.0 0.00 .500 - 66.7% 50.0% 25.0% 18.2% 45.5% 1.09 5.54
RP MLB Percentile 0 0 0 0-79 0 0 2 3 0 50 61 100 18 100 0 97 0 0 27 1 2 97 100 100 100
RP MLB AVG 33 2 42.0 2-2 3 5 4.24 1.35 4.23 4.26 4.30 3.46 22.4% 9.9% 8.3 1.13 .288 17.9% 72.6% 37.0% 43.6% 12.1% 28.5% 0.50 4.94
Career 118 0 145.0 6-6 2 8 4.03 1.30 4.50 4.38 4.36 3.60 20.5% 9.2% 8.1 1.06 .281 18.9% 72.1% 37.2% 40.5% 11.3% 28.7% 0.49 4.94

Seth Martinez Repertoire

2021 2022 2023 2024 2025 2026 All
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Seth Martinez Game Log

Seth Martinez 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
2021 HOU 3 0 3.0 0-0 0 0 0 63 38 25 16 5 3 2 0 0 3 3 0 0
2022 HOU 29 0 38.2 1-1 0 0 3 592 388 204 155 26 21 2 0 3 38 14 1 0
2023 HOU 35 0 43.0 2-3 0 1 2 764 478 286 195 45 27 12 1 5 45 19 6 0
2024 HOU 44 0 52.2 3-2 0 1 3 838 529 309 222 49 29 12 1 7 36 18 4 0
2025 MIA 6 0 6.2 0-0 0 0 0 120 75 45 27 4 1 1 0 2 4 3 0 0
2026 BOS 1 0 1.0 0-0 0 0 0 22 17 5 6 2 1 1 0 0 1 0 1 0
RP MLB Percentile 0 0 0 0-79 0 0 0 0 0 100 0 100 100 95 44 97 0 100 57 71
RP MLB AVG 33 2 42.0 2-2 0 3 5 695 444 252 178 38 25 7 1 5 40 17 2 2
Career 118 0 145.0 6-6 0 2 8 2,399 1,525 874 621 131 82 30 2 17 127 57 12 0

Seth Martinez Advanced

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Year Team K% BB% AVG SLG OPS wOBA BABIP BACON xAVG xwOBA xBABIP xwoBACON EV FB EV LA xERA
2021 HOU 18.8% 18.8% .385 .538 1.038 .450 .500 .500 .387 .465 .490 .536 88.7 74.4 15.7 9.25
2022 HOU 24.5% 9.0% .187 .266 .532 .242 .235 .257 .175 .246 .217 .275 85.9 89.1 15.4 2.49
2023 HOU 23.1% 9.7% .265 .435 .794 .345 .333 .360 .260 .348 .319 .408 88.9 89.8 12.0 5.28
2024 HOU 16.2% 8.1% .246 .422 .743 .323 .269 .301 .253 .331 .276 .356 87.5 90.0 16.6 4.54
2025 MIA 14.8% 11.1% .182 .500 .759 .307 .111 .200 .331 .457 .286 .516 92.6 93.5 27.1 7.91
2026 BOS 16.7% 0.0% .400 .600 1.100 .480 .500 .500 .429 .502 .537 .570 82.8 - 13.0 10.26
RP MLB Percentile 18 100 0 2 1 0 0 1 0 0 0 0 98 0 52 0
RP MLB AVG 22.4% 9.9% .240 .392 .715 .315 .288 .320 .236 .317 .280 .361 87.7 89.2 13.3 4.23
Career 20.5% 9.2% .239 .394 .717 .317 .281 .310 .243 .329 .282 .369 87.7 89.7 15.4 4.50

Seth Martinez 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%
2021 HOU42.9% (89.9)23.8% (90.9)23.8% (79.0)3.2% (79.7)--6.4% (84.9)-- 66.7% 33.3%
2022 HOU33.5% (91.9)20.6% (90.8)5.1% (85.1)29.6% (79.6)--11.3% (86.5)-- 54.1% 45.9%
2023 HOU39.9% (91.1)17.2% (90.2)-1.7% (78.5)25.1% (79.4)-16.1% (86.2)-- 57.1% 42.9%
2024 HOU32.5% (90.8)21.1% (89.8)-0.4% (79.8)31.5% (79.1)-14.6% (84.7)-- 53.6% 46.4%
2025 MIA26.7% (90.1)9.2% (88.8)16.7% (84.8)-36.7% (77.5)-10.8% (82.5)-- 35.8% 64.2%
2026 BOS18.2% (90.9)31.8% (89.1)--40.9% (78.6)-9.1% (82.8)-- 50.0% 50.0%
RP MLB Percentile 11 (4) 68 (3) - - 91 (7) - 28 (14) - - 54.7% 45.6%
RP MLB AVG 38.1% (94.6) 26.4% (93.9) 20.3% (89.4) 25.6% (85.6) 21.5% (82.5) 16.3% (79.7) 17.2% (86.2) 17.5% (86.6) 32.6% (68.2) 48.2% 51.7%
Career34.9% (91.1)19.3% (90.2)2.7% (83.6)8.1% (79.6)21.2% (79.1)-13.8% (85.5)-- 54.2% 45.8%

Seth Martinez 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%
2021 HOU44.4% (2)26.7% (1)13.3% (2)50.0% (1)--0.0% (0)-- 38.1% 14.3%
2022 HOU32.8% (17)28.7% (6)26.7% (8)35.4% (35)--11.9% (6)-- 31.3% 28.7%
2023 HOU31.1% (26)26.7% (11)-7.7% (0)32.3% (32)-19.5% (20)-- 29.8% 26.5%
2024 HOU30.1% (22)25.4% (12)-0.0% (0)31.1% (37)-20.5% (17)-- 28.3% 27.5%
2025 MIA21.9% (4)27.3% (0)30.0% (3)-31.8% (5)-7.7% (0)-- 23.3% 27.3%
2026 BOS50.0% (0)57.1% (2)--44.4% (2)-0.0% (0)-- 54.5% 36.4%
RP MLB Percentile 100 (0) 100 (17) - - 97 (83) - 0 (0) - - 99.2% 94.9%
RP MLB AVG 26.9% (25) 27.4% (10) 26.5% (12) 29.4% (21) 28.3% (16) 27.2% (11) 21.7% (15) 23.5% (17) 22.1% (9) 27.8% 28.8%
Career31.4% (71)27.2% (32)24.6% (13)33.2% (36)31.8% (76)-17.5% (43)-- 29.9% 27.3%

Seth Martinez 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%
2021 HOU 30.0% 40.0% 20.0% 10.0% 50.0% 50.0% 20.0% 30.0% 14.3% 40.0% 40.0% 10.0% 10.0% 60.0%
2022 HOU 43.6% 20.8% 18.8% 17.8% 27.7% 45.1% 37.3% 17.6% 18.2% 72.4% 18.8% 4.0% 5.0% 27.5%
2023 HOU 41.1% 27.4% 23.4% 8.1% 41.1% 40.8% 37.6% 21.6% 17.8% 55.7% 25.8% 9.7% 8.9% 44.0%
2024 HOU 42.0% 22.8% 19.8% 15.4% 32.7% 42.1% 34.1% 23.8% 15.6% 64.2% 23.5% 5.6% 6.8% 35.4%
2025 MIA 15.8% 26.3% 42.1% 15.8% 52.6% 40.0% 45.0% 15.0% 20.0% 52.6% 5.3% 15.8% 26.3% 45.0%
2026 BOS 25.0% 50.0% 0.0% 25.0% 50.0% 25.0% 75.0% 0.0% 13.6% 50.0% 50.0% 0.0% 0.0% 50.0%
RP MLB Percentile 2 0 0 99 1 1 100 0 3 2 0 98 99 1
RP MLB AVG 43.6% 21.7% 24.6% 10.2% 34.8% 41.1% 33.7% 25.2% 18.1% 62.7% 24.4% 5.8% 7.1% 37.0%
Career 40.5% 24.5% 21.4% 13.8% 35.5% 42.4% 36.5% 21.2% 17.1% 62.4% 22.9% 6.9% 7.9% 37.2%

Seth Martinez 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%
2021 HOU .385 .450 .500 .500 .387 .465 .490 .536 88.7 74.4 15.7 0.0% 60.0% 37.5%
2022 HOU .187 .242 .235 .257 .175 .246 .217 .275 85.9 89.1 15.4 15.8% 27.5% 18.1%
2023 HOU .265 .345 .333 .360 .260 .348 .319 .408 88.9 89.8 12.0 17.2% 44.0% 28.2%
2024 HOU .246 .323 .269 .301 .253 .331 .276 .356 87.5 90.0 16.6 21.9% 35.4% 26.1%
2025 MIA .182 .307 .111 .200 .331 .457 .286 .516 92.6 93.5 27.1 25.0% 45.0% 33.3%
2026 BOS .400 .480 .500 .500 .429 .502 .537 .570 82.8 - 13.0 - 50.0% 33.3%
RP MLB Percentile 0 0 0 1 0 0 0 0 98 0 52 0 1 4
RP MLB AVG .240 .315 .288 .320 .236 .317 .280 .361 87.7 89.2 13.3 17.9% 37.0% 24.6%
Career .239 .317 .281 .310 .243 .329 .282 .369 87.7 89.7 15.4 18.9% 37.2% 25.4%

Seth Martinez 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
2021 HOU 52.4% 60.3% 39.7% 20.0% 24.0% 14.3% 76.0% 73.7% 83.3% 20.6% 9.5% 30.2% 15.9% 52.4% 0.49 41.3%
2022 HOU 45.3% 65.5% 47.6% 30.2% 25.5% 18.2% 74.5% 78.8% 66.3% 17.9% 12.2% 30.1% 17.2% 61.1% 0.57 56.1%
2023 HOU 44.8% 62.6% 45.8% 27.7% 25.4% 17.8% 74.6% 84.1% 55.6% 16.8% 11.6% 28.4% 16.4% 56.7% 0.49 48.2%
2024 HOU 44.3% 63.1% 45.7% 28.7% 23.0% 15.6% 77.0% 82.7% 66.4% 17.4% 10.5% 27.9% 19.6% 57.3% 0.43 49.3%
2025 MIA 52.5% 62.5% 46.7% 24.6% 21.4% 20.0% 78.6% 83.3% 64.3% 15.8% 10.0% 25.8% 16.7% 59.2% 0.43 47.5%
2026 BOS 54.5% 77.3% 50.0% 50.0% 36.4% 13.6% 63.6% 66.7% 60.0% 27.3% 18.2% 45.5% 18.2% 68.2% 1.09 59.1%
RP MLB Percentile 99 100 75 100 96 3 96 100 41 100 97 100 67 100 100 98
RP MLB AVG 44.4% 63.7% 47.4% 31.7% 25.6% 18.1% 74.4% 83.9% 58.6% 16.3% 12.1% 28.5% 17.1% 58.3% 0.50 51.1%
Career 45.4% 63.6% 46.1% 28.5% 24.5% 17.1% 75.5% 81.9% 63.1% 17.4% 11.3% 28.7% 17.7% 58.1% 0.49 50.4%

Seth Martinez Approach › Locations

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Year Team Zone% aLoc% x-mLoc% gLoc% hiLoc% y-mLoc% loLoc% iLoc% oLoc% mmLoc%
2021 HOU 52.4% 30.2% 25.4% 44.4% 33.3% 22.2% 44.4% 33.3% 41.3% 4.8%
2022 HOU 45.3% 40.5% 21.5% 38.0% 23.5% 28.4% 48.1% 30.6% 48.0% 5.4%
2023 HOU 44.8% 45.5% 21.2% 33.2% 24.5% 26.3% 49.2% 27.6% 51.2% 6.7%
2024 HOU 44.3% 40.6% 19.0% 40.5% 21.0% 30.9% 48.1% 27.8% 53.2% 7.3%
2025 MIA 52.5% 41.7% 25.0% 33.3% 26.7% 26.7% 46.7% 27.5% 47.5% 5.8%
2026 BOS 54.5% 50.0% 4.5% 45.5% 22.7% 27.3% 50.0% 40.9% 54.5% 4.5%
RP MLB Percentile 99 99 100 88 4 9 88 98 98 3
RP MLB AVG 44.4% 34.6% 27.0% 38.5% 36.4% 22.9% 40.7% 29.8% 43.2% 6.6%
Career 45.4% 42.0% 20.6% 37.3% 23.3% 28.3% 48.3% 28.7% 50.7% 6.5%

Seth Martinez Approach › Counts

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Year Team Early% Behind% 2-Str% Early BIP% F-Str% TF-Str% ECS% 2-Str O-Sw% PAR%
2021 HOU 61.9% 12.7% 25.4% 12.8% 50.0% 43.8% 20.5% 6.3% 18.8%
2022 HOU 60.5% 12.2% 28.0% 12.8% 67.1% 58.1% 20.1% 25.9% 22.9%
2023 HOU 58.6% 10.1% 32.3% 15.0% 58.2% 46.9% 23.2% 20.6% 17.8%
2024 HOU 60.7% 12.4% 27.7% 17.3% 60.4% 49.1% 22.6% 25.4% 15.5%
2025 MIA 51.7% 11.7% 37.5% 12.9% 51.9% 44.4% 24.2% 17.8% 8.9%
2026 BOS 59.1% 0.0% 40.9% 0.0% 83.3% 83.3% 46.2% 44.4% 11.1%
RP MLB Percentile 59 100 100 0 100 100 100 100 3
RP MLB AVG 58.5% 12.2% 29.9% 14.4% 60.8% 50.1% 21.1% 26.8% 19.1%
Career 59.6% 11.5% 29.8% 15.0% 61.0% 50.6% 22.4% 23.2% 17.6%

Seth Martinez PLV

Hide 2026 MLB Percentile | Hide 2026 MLB Average
Year Team P PLV QP% AP% BP% Q-BP% MTK% HP HL PLA
2021 HOU 63 4.94 50.8% 11.1% 38.1% 12.7% 4.8% 2.0 +2 4.98
2022 HOU 592 4.96 45.3% 16.2% 38.5% 6.8% 6.1% -7.7 -3 3.20
2023 HOU 764 4.93 44.0% 19.1% 36.9% 7.1% 4.8% 9.7 +9 4.02
2024 HOU 838 4.92 43.6% 19.3% 37.1% 6.4% 6.1% 4.3 +6 3.49
2025 MIA 120 4.94 45.0% 13.3% 41.7% 3.3% 6.7% -0.1 -2 3.73
2026 BOS 22 5.54 68.2% 9.1% 22.7% 45.5% 4.5% 1.4 +1 1.84
RP MLB Percentile 0 100 100 0 100 100 49 46 43 100
RP MLB AVG 695 4.94 45.9% 17.4% 36.7% 9.1% 4.6% 0.7 0 3.46
Career 2,399 4.94 44.6% 17.9% 37.5% 7.1% 5.7% 9.6 +12 3.60
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