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Seth Halvorsen

#54 - Relief Pitcher

Colorado Rockies

Bats / Throws Right / Right
Date of Birth 2/18/2000 (26)
Height, Weight 6'2", 243 lb
Hometown Chicago, IL

2026 Season Stats

MLB Rank MLB Average
Sv IP ERA WHIP K% BB%
0 16.1 3.31 1.78 20.3% 17.7%
162nd 2
Sv
259th 25.0
IP
120th 4.40
ERA
278th 1.39
WHIP
191st 22.2%
K%
332nd 10.3%
BB%
FB MPH SwStr% CSW% Str-ICR MTK% PLV PLA
98.9 11.4% 24.6% 44.6% 5.2% 4.49 6.09
7th 94.3
FB MPH
173rd 12.0%
SwStr%
295th 28.4%
CSW%
315th 50.5%
Str-ICR
231st 4.6%
MTK%
342nd 4.93
PLV
337th 3.58
PLA

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Seth Halvorsen 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
2024 COL 12 0 12.1 2-1 2 2 1.46 0.81 2.75 3.91 2.94 2.45 28.3% 4.3% 5.8 1.46 .214 33.3% 97.6% 23.3% 48.3% 15.7% 33.7% 0.69 5.18
2025 COL 42 0 39.2 1-2 11 4 4.99 1.56 5.72 5.23 4.40 3.68 20.9% 11.6% 9.3 1.59 .315 29.2% 69.0% 32.8% 56.5% 14.2% 28.6% 0.46 4.82
2026 COL 18 0 16.1 0-0 0 2 3.31 1.78 7.23 5.34 5.20 6.09 20.3% 17.7% 8.3 1.10 .277 20.0% 87.8% 46.9% 47.9% 11.4% 24.6% 0.37 4.49
RP MLB Percentile 39 0 25 0-68 0 47 65 19 4 23 26 4 44 5 57 43 68 33 92 10 73 48 15 18 2
RP MLB AVG 20 1 25.0 1-1 2 3 4.40 1.39 4.37 4.35 4.41 3.58 22.2% 10.3% 8.5 1.11 .292 17.9% 72.3% 37.4% 43.4% 12.0% 28.4% 0.49 4.93
Career 72 0 68.1 3-3 13 8 3.95 1.48 5.54 4.99 4.32 4.03 21.9% 12.1% 8.4 1.45 .290 27.5% 77.4% 34.9% 53.1% 13.6% 28.3% 0.47 4.78

Seth Halvorsen Repertoire

2024 2025 2026 All
Hide MLB Percentile | Hide MLB Average

Seth Halvorsen Game Log

Seth Halvorsen Standard

Hide 2026 MLB Percentile | Hide 2026 MLB Average
Year Team G GS IP W-L QS Sv Hld P Strikes Balls TBF H 1B 2B 3B HR K BB HB WP
2024 COL 12 0 12.1 2-1 0 2 2 178 120 58 46 8 6 0 0 2 13 2 1 0
2025 COL 42 0 39.2 1-2 0 11 4 636 398 238 172 41 23 10 1 7 36 20 0 3
2026 COL 18 0 16.1 0-0 0 0 2 325 191 134 79 15 8 4 1 2 16 14 0 2
RP MLB Percentile 39 0 25 0-68 0 0 47 32 29 60 29 73 83 39 7 46 29 24 67 13
RP MLB AVG 20 1 25.0 1-1 0 2 3 428 272 157 110 23 15 4 0 3 24 11 1 1
Career 72 0 68.1 3-3 0 13 8 1,139 709 430 297 64 37 14 2 11 65 36 1 5

Seth Halvorsen 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
2024 COL 28.3% 4.3% .186 .326 .565 .250 .214 .267 .217 .263 .295 .335 92.1 79.7 15.4 2.75
2025 COL 20.9% 11.6% .273 .493 .850 .363 .315 .357 .279 .372 .318 .433 88.2 86.6 6.9 5.72
2026 COL 20.3% 17.7% .231 .415 .782 .347 .277 .306 .314 .425 .384 .492 91.9 89.1 11.5 7.23
RP MLB Percentile 44 5 66 42 38 38 68 67 6 4 4 3 7 56 60 4
RP MLB AVG 22.2% 10.3% .243 .393 .722 .320 .292 .322 .239 .323 .283 .364 87.8 89.4 13.3 4.37
Career 21.9% 12.1% .248 .446 .787 .344 .290 .330 .278 .373 .331 .437 89.7 86.2 9.3 5.54

Seth Halvorsen 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%
2024 COL 37.1% (99.9) 19.1% (100.1) - 15.7% (88.9) - - - 28.1% (89.4) - 56.2% 43.8%
2025 COL 53.8% (100.0) 0.6% (99.3) - 19.7% (89.4) - - - 25.8% (90.8) - 54.4% 45.4%
2026 COL 61.2% (98.9) - - 30.5% (86.2) - - - 8.3% (90.3) - 61.2% 38.8%
RP MLB Percentile 94 (98) - - 65 (47) - - - 23 (89) - 85.1% 15.1%
RP MLB AVG 37.6% (94.3) 25.6% (94.0) 21.8% (89.3) 26.0% (85.4) 21.7% (82.5) 17.6% (79.9) 18.2% (86.2) 19.8% (86.5) 31.8% (68.1) 47.7% 52.2%
Career 53.3% (99.6) 3.3% (100.0) - 22.1% (88.1) - - - 21.2% (90.4) - 56.6% 43.3%

Seth Halvorsen 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%
2024 COL 31.8% (7) 38.2% (4) - 32.1% (7) - - - 34.0% (10) - 34.0% 33.3%
2025 COL 30.4% (40) 25.0% (0) - 27.2% (22) - - - 26.2% (28) - 30.3% 26.6%
2026 COL 20.1% (14) - - 30.3% (18) - - - 37.0% (5) - 20.1% 31.7%
RP MLB Percentile 12 (39) - - 53 (25) - - - 90 (54) - 6.3% 73.7%
RP MLB AVG 27.0% (15) 27.4% (6) 27.0% (8) 29.3% (13) 28.2% (11) 27.5% (7) 21.9% (10) 24.2% (13) 23.3% (6) 27.6% 28.8%
Career 27.2% (61) 36.8% (4) - 29.0% (47) - - - 29.0% (43) - 27.8% 29.0%

Seth Halvorsen 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
2024 COL 48.3% 20.7% 20.7% 10.3% 31.0% 26.7% 33.3% 40.0% 16.9% 75.8% 13.8% 3.4% 6.9% 23.3%
2025 COL 56.5% 16.5% 20.9% 6.1% 31.3% 46.6% 25.0% 28.4% 15.7% 66.9% 19.1% 4.3% 9.6% 32.8%
2026 COL 47.9% 25.0% 20.8% 6.3% 47.9% 30.6% 34.7% 34.7% 19.1% 52.1% 35.4% 6.3% 6.3% 46.9%
RP MLB Percentile 73 37 33 22 5 10 63 89 73 8 5 37 55 10
RP MLB AVG 43.4% 22.0% 24.3% 10.3% 34.8% 41.4% 33.4% 25.2% 17.8% 62.2% 24.6% 5.9% 7.3% 37.4%
Career 53.1% 19.3% 20.8% 6.8% 35.4% 39.5% 28.7% 31.8% 16.9% 64.6% 22.4% 4.7% 8.3% 34.9%

Seth Halvorsen 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%
2024 COL .186 .250 .214 .267 .217 .263 .295 .335 92.1 79.7 15.4 33.3% 23.3% 15.2%
2025 COL .273 .363 .315 .357 .279 .372 .318 .433 88.2 86.6 6.9 29.2% 32.8% 22.1%
2026 COL .231 .347 .277 .306 .314 .425 .384 .492 91.9 89.1 11.5 20.0% 46.9% 29.1%
RP MLB Percentile 66 38 68 67 6 4 4 3 7 56 60 33 10 21
RP MLB AVG .243 .320 .292 .322 .239 .323 .283 .364 87.8 89.4 13.3 17.9% 37.4% 24.8%
Career .248 .344 .290 .330 .278 .373 .331 .437 89.7 86.2 9.3 27.5% 34.9% 22.9%

Seth Halvorsen 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
2024 COL 53.9% 67.4% 49.4% 24.4% 31.8% 16.9% 68.2% 77.9% 35.0% 18.0% 15.7% 33.7% 16.9% 62.9% 0.69 59.6%
2025 COL 45.4% 62.6% 48.1% 32.3% 29.4% 15.7% 70.6% 82.0% 50.9% 14.5% 14.2% 28.6% 18.2% 56.1% 0.46 50.6%
2026 COL 40.6% 58.8% 45.5% 29.0% 25.0% 19.1% 75.0% 82.6% 62.5% 13.2% 11.4% 24.6% 15.1% 54.2% 0.37 44.6%
RP MLB Percentile 17 13 41 38 52 73 52 63 35 10 48 15 21 17 18 10
RP MLB AVG 44.5% 63.3% 46.8% 31.1% 25.5% 17.8% 74.5% 83.9% 58.7% 16.5% 12.0% 28.4% 17.0% 57.8% 0.49 50.5%
Career 45.4% 62.2% 47.6% 30.2% 28.6% 16.9% 71.4% 81.4% 52.7% 14.7% 13.6% 28.3% 17.1% 56.6% 0.47 50.3%

Seth Halvorsen Approach › Locations

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Year Team Zone% aLoc% x-mLoc% gLoc% hiLoc% y-mLoc% loLoc% iLoc% oLoc% mmLoc%
2024 COL 53.9% 43.8% 28.1% 28.1% 25.8% 29.2% 44.9% 21.3% 50.6% 9.6%
2025 COL 45.4% 45.4% 24.4% 30.2% 30.2% 23.8% 46.0% 27.9% 47.7% 6.1%
2026 COL 40.6% 27.1% 28.0% 44.9% 45.8% 19.4% 34.8% 26.5% 45.5% 6.5%
RP MLB Percentile 17 8 28 86 88 83 21 17 69 57
RP MLB AVG 44.5% 34.7% 26.9% 38.4% 36.3% 22.9% 40.8% 30.1% 43.0% 6.5%
Career 45.4% 39.9% 26.0% 34.1% 34.0% 23.4% 42.6% 26.4% 47.5% 6.8%

Seth Halvorsen Approach › Counts

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Year Team Early% Behind% 2-Str% Early BIP% F-Str% TF-Str% ECS% 2-Str O-Sw% PAR%
2024 COL 54.5% 10.7% 36.0% 12.4% 69.6% 56.5% 24.7% 7.8% 20.3%
2025 COL 61.6% 11.3% 27.7% 16.3% 59.9% 47.1% 18.6% 26.1% 20.5%
2026 COL 57.5% 14.2% 29.5% 12.3% 53.8% 46.2% 16.6% 22.9% 16.7%
RP MLB Percentile 40 37 61 25 14 27 10 24 32
RP MLB AVG 58.5% 12.5% 29.6% 14.3% 60.3% 49.7% 21.2% 26.2% 19.1%
Career 59.4% 12.0% 29.5% 14.6% 59.8% 48.3% 18.9% 21.7% 19.3%

Seth Halvorsen PLV

Hide 2026 MLB Percentile | Hide 2026 MLB Average
Year Team P PLV QP% AP% BP% Q-BP% MTK% HP HL PLA
2024 COL 178 5.18 50.0% 16.9% 33.1% 16.9% 6.2% -1.0 -3 2.45
2025 COL 636 4.82 42.1% 20.9% 36.9% 5.2% 5.0% 10.0 +9 3.68
2026 COL 325 4.49 35.7% 18.5% 45.8% -10.2% 5.2% -0.9 -1 6.09
RP MLB Percentile 32 2 0 60 2 2 32 64 69 4
RP MLB AVG 428 4.93 46.0% 17.1% 36.9% 9.1% 4.6% 0.8 +0 3.58
Career 1,139 4.78 41.5% 19.6% 38.9% 2.6% 5.3% 8.1 +5 4.03
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