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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 9.1 3.86 1.82 22.2% 17.8%
136th 1
Sv
290th 18.0
IP
65th 4.56
ERA
277th 1.43
WHIP
146th 22.2%
K%
340th 10.8%
BB%
FB MPH SwStr% CSW% Str-ICR MTK% PLV PLA
98.7 11.2% 25.7% 49.2% 6.1% 4.42 6.17
9th 94.2
FB MPH
213th 12.0%
SwStr%
277th 28.5%
CSW%
171st 50.5%
Str-ICR
321st 4.5%
MTK%
352nd 4.93
PLV
343rd 3.73
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 10 0 9.1 0-0 0 2 3.86 1.82 6.33 3.53 4.51 6.17 22.2% 17.8% 8.7 0.00 .333 0.0% 76.5% 40.7% 55.6% 11.2% 25.7% 0.44 4.42
RP MLB Percentile 26 0 16 0-59 0 52 81 22 20 56 43 3 58 3 73 82 56 82 84 55 96 38 20 37 0
RP MLB AVG 14 1 18.0 1-1 1 2 4.56 1.43 4.36 4.38 4.36 3.73 22.2% 10.8% 8.5 1.07 .293 17.1% 71.9% 37.2% 44.4% 12.0% 28.5% 0.49 4.93
Career 64 0 61.1 3-3 13 8 4.11 1.45 5.21 4.68 4.11 3.81 22.4% 11.4% 8.5 1.32 .301 26.5% 73.6% 32.4% 55.0% 13.9% 29.0% 0.50 4.81

Seth Halvorsen Repertoire

2024 2025 2026 All
Hide MLB Percentile | Hide MLB Average

Seth Halvorsen Game Log

Seth Halvorsen 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
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 10 0 9.1 0-0 0 0 2 179 110 69 45 9 5 3 1 0 10 8 0 1
RP MLB Percentile 26 0 16 0-59 0 0 52 18 17 80 17 87 85 54 22 82 19 35 57 19
RP MLB AVG 14 1 18.0 1-1 0 1 2 320 202 118 82 17 11 3 0 2 18 8 1 1
Career 64 0 61.1 3-3 0 13 8 993 628 365 263 58 34 13 2 9 59 30 1 4

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 22.2% 17.8% .243 .378 .756 .338 .333 .333 .311 .395 .421 .462 90.6 77.3 7.4 6.33
RP MLB Percentile 58 3 76 86 69 63 56 74 22 20 5 23 10 68 90 20
RP MLB AVG 22.2% 10.8% .241 .385 .717 .321 .293 .321 .236 .323 .284 .363 88.0 89.3 13.0 4.36
Career 22.4% 11.4% .252 .443 .783 .345 .301 .337 .273 .364 .331 .429 89.2 84.3 8.4 5.21

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 60.9% (98.7) - - 29.1% (86.2) - - - 10.1% (90.5) - 60.9% 39.1%
RP MLB Percentile 95 (97) - - 61 (48) - - - 24 (91) - 86.7% 13.6%
RP MLB AVG 36.4% (94.2) 26.5% (93.9) 21.0% (89.3) 26.6% (85.5) 22.9% (82.4) 17.2% (80.4) 18.4% (86.1) 20.1% (86.4) 31.8% (68.1) 48.0% 51.9%
Career 52.1% (99.7) 3.8% (100.0) - 20.6% (88.6) - - - 23.4% (90.5) - 55.9% 44.0%

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 20.2% (6) - - 30.8% (9) - - - 44.4% (5) - 20.2% 34.3%
RP MLB Percentile 17 (56) - - 54 (38) - - - 97 (55) - 5.7% 87.0%
RP MLB AVG 26.6% (10) 27.6% (5) 26.5% (6) 29.8% (10) 27.8% (9) 27.2% (6) 22.3% (8) 25.4% (11) 23.3% (6) 28.0% 28.6%
Career 28.4% (53) 36.8% (4) - 28.8% (38) - - - 29.3% (43) - 29.0% 29.1%

Seth Halvorsen 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
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 55.6% 25.9% 14.8% 3.7% 44.4% 40.7% 25.9% 33.3% 20.7% 59.2% 37.0% 3.7% 0.0% 40.7%
RP MLB Percentile 96 39 2 13 19 46 8 95 86 58 4 93 92 55
RP MLB AVG 44.4% 21.4% 23.9% 10.3% 34.1% 41.5% 33.7% 24.8% 17.6% 62.5% 24.3% 6.1% 7.1% 37.2%
Career 55.0% 18.7% 19.9% 6.4% 33.3% 42.2% 26.6% 31.2% 16.8% 67.2% 21.1% 4.1% 7.6% 32.4%

Seth Halvorsen 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%
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 .243 .338 .333 .333 .311 .395 .421 .462 90.6 77.3 7.4 0.0% 40.7% 24.4%
RP MLB Percentile 76 63 56 74 22 20 5 23 10 68 90 82 55 76
RP MLB AVG .241 .321 .293 .321 .236 .323 .284 .363 88.0 89.3 13.0 17.1% 37.2% 24.4%
Career .252 .345 .301 .337 .273 .364 .331 .429 89.2 84.3 8.4 26.5% 32.4% 21.3%

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 42.5% 61.5% 46.9% 31.1% 23.8% 20.7% 76.2% 90.4% 53.1% 14.5% 11.2% 25.7% 15.1% 56.4% 0.44 49.2%
RP MLB Percentile 32 24 44 39 39 86 39 19 67 25 38 20 14 39 37 51
RP MLB AVG 44.2% 63.0% 46.4% 30.8% 25.7% 17.6% 74.3% 83.8% 58.5% 16.6% 12.0% 28.5% 16.9% 57.6% 0.49 50.5%
Career 46.4% 63.2% 48.1% 30.8% 28.9% 16.8% 71.1% 82.5% 49.4% 15.1% 13.9% 29.0% 17.4% 57.4% 0.50 52.0%

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 42.5% 21.8% 32.4% 45.8% 41.3% 19.6% 39.1% 27.4% 40.2% 7.3%
RP MLB Percentile 32 8 13 82 69 84 50 21 48 79
RP MLB AVG 44.2% 34.8% 26.8% 38.4% 36.3% 22.9% 40.9% 30.5% 42.8% 6.4%
Career 46.4% 40.8% 26.5% 32.7% 31.5% 24.0% 44.6% 26.6% 46.9% 7.0%

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 58.7% 15.1% 28.5% 10.5% 52.3% 45.5% 17.1% 23.5% 19.6%
RP MLB Percentile 59 10 22 15 3 7 11 37 71
RP MLB AVG 58.5% 12.8% 29.3% 14.1% 60.0% 49.5% 21.1% 26.3% 19.4%
Career 59.8% 11.9% 29.3% 14.6% 60.3% 48.5% 19.4% 21.6% 20.3%

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 179 4.42 35.8% 20.7% 43.6% -7.8% 6.1% -1.3 0 6.17
RP MLB Percentile 18 0 1 39 0 0 9 82 71 3
RP MLB AVG 320 4.93 46.2% 16.9% 37.0% 9.2% 4.5% 0.4 0 3.73
Career 993 4.81 42.4% 20.1% 37.5% 4.9% 5.4% 7.6 +6 3.81
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