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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 19.0 4.74 1.95 17.7% 15.6%
179th 2
Sv
257th 30.0
IP
220th 4.37
ERA
328th 1.38
WHIP
265th 22.2%
K%
323rd 10.1%
BB%
FB MPH SwStr% CSW% Str-ICR MTK% PLV PLA
98.8 10.9% 23.7% 44.0% 4.8% 4.53 5.86
10th 94.4
FB MPH
219th 12.1%
SwStr%
332nd 28.4%
CSW%
330th 50.7%
Str-ICR
200th 4.6%
MTK%
345th 4.93
PLV
339th 3.55
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 21 0 19.0 0-1 0 2 4.74 1.95 6.78 5.74 5.35 5.86 17.7% 15.6% 10.4 1.42 .311 23.1% 82.3% 45.3% 47.6% 10.9% 23.7% 0.32 4.53
RP MLB Percentile 39 0 25 0-44 0 43 37 6 4 14 17 3 24 7 16 29 37 26 84 8 67 36 5 7 1
RP MLB AVG 24 1 30.0 2-2 2 4 4.37 1.38 4.34 4.37 4.42 3.55 22.2% 10.1% 8.4 1.13 .291 18.0% 72.2% 37.2% 43.6% 12.1% 28.4% 0.49 4.93
Career 75 0 71.0 3-4 13 8 4.31 1.54 5.49 5.12 4.40 4.05 21.0% 11.8% 9.0 1.52 .299 27.9% 76.2% 35.2% 52.7% 13.4% 27.8% 0.45 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 21 0 19.0 0-1 0 0 2 375 223 152 96 22 14 4 1 3 17 15 0 2
RP MLB Percentile 39 0 25 0-44 0 0 43 32 30 61 31 56 56 49 9 42 25 28 72 19
RP MLB AVG 24 1 30.0 2-2 0 2 4 509 324 185 131 28 18 5 0 4 29 13 2 1
Career 75 0 71.0 3-4 0 13 8 1,189 741 448 314 71 43 14 2 12 66 37 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 17.7% 15.6% .272 .457 .842 .369 .311 .344 .311 .408 .362 .453 90.2 90.3 12.3 6.78
RP MLB Percentile 24 7 27 25 17 17 37 35 3 4 3 6 15 43 56 4
RP MLB AVG 22.2% 10.1% .243 .392 .720 .318 .291 .321 .237 .319 .281 .360 87.8 89.3 13.3 4.34
Career 21.0% 11.8% .259 .456 .804 .350 .299 .340 .279 .370 .328 .428 89.4 86.8 9.8 5.49

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 COL37.1% (99.9)19.1% (100.1)-15.7% (88.9)---28.1% (89.4)- 56.2% 43.8%
2025 COL53.8% (100.0)0.6% (99.3)-19.7% (89.4)---25.8% (90.8)- 54.4% 45.4%
2026 COL62.7% (98.8)--29.3% (86.2)---8.0% (90.2)- 62.7% 37.3%
RP MLB Percentile 94 (97) - - 64 (49) - - - 26 (88) - 88.6% 11.1%
RP MLB AVG 38.2% (94.4) 25.3% (94.0) 21.0% (89.4) 26.0% (85.0) 21.3% (82.5) 17.2% (79.6) 17.5% (86.2) 18.8% (86.4) 31.8% (68.1) 48.1% 51.7%
Career54.1% (99.6)3.2% (100.0)-22.1% (88.0)---20.5% (90.4)- 57.3% 42.6%

Seth Halvorsen 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%
2024 COL31.8% (7)38.2% (4)-32.1% (7)---34.0% (10)- 34.0% 33.3%
2025 COL30.4% (40)25.0% (0)-27.2% (22)---26.2% (28)- 30.3% 26.6%
2026 COL19.1% (14)--30.0% (21)---36.7% (6)- 19.1% 31.4%
RP MLB Percentile 8 (48) - - 52 (25) - - - 94 (49) - 3.1% 70.0%
RP MLB AVG 27.0% (18) 27.3% (7) 27.4% (9) 29.5% (15) 28.2% (13) 27.6% (9) 21.5% (12) 23.9% (15) 23.3% (6) 27.6% 28.7%
Career26.4% (61)36.8% (4)-28.9% (50)---29.1% (44)- 27.0% 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 47.6% 23.8% 20.6% 7.9% 42.9% 35.9% 34.4% 29.7% 18.7% 53.9% 34.9% 4.8% 6.3% 45.3%
RP MLB Percentile 67 34 28 33 7 23 58 79 61 6 4 58 55 8
RP MLB AVG 43.6% 21.7% 24.3% 10.4% 34.5% 41.2% 33.7% 25.1% 17.9% 62.5% 24.4% 6.0% 7.2% 37.2%
Career 52.7% 19.3% 20.8% 7.2% 34.8% 40.5% 29.0% 30.5% 16.8% 64.2% 23.2% 4.3% 8.2% 35.2%

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 .272 .369 .311 .344 .311 .408 .362 .453 90.2 90.3 12.3 23.1% 45.3% 30.2%
RP MLB Percentile 27 17 37 35 3 4 3 6 15 43 56 26 8 13
RP MLB AVG .243 .318 .291 .321 .237 .319 .281 .360 87.8 89.3 13.3 18.0% 37.2% 24.7%
Career .259 .350 .299 .340 .279 .370 .328 .428 89.4 86.8 9.8 27.9% 35.2% 23.6%

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 40.3% 59.5% 46.7% 29.9% 23.4% 18.7% 76.6% 84.3% 64.2% 12.8% 10.9% 23.7% 17.1% 53.6% 0.32 44.0%
RP MLB Percentile 11 11 41 37 37 61 37 51 26 7 36 5 48 9 7 6
RP MLB AVG 44.5% 63.4% 47.1% 31.3% 25.6% 17.9% 74.4% 83.8% 58.5% 16.3% 12.1% 28.4% 17.1% 58.0% 0.49 50.7%
Career 45.1% 62.3% 47.9% 30.5% 27.9% 16.8% 72.1% 81.9% 53.8% 14.5% 13.4% 27.8% 17.7% 56.3% 0.45 49.9%

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 40.3% 26.7% 30.1% 43.2% 46.7% 19.5% 33.9% 25.9% 44.0% 6.9%
RP MLB Percentile 11 12 20 79 89 84 19 19 55 59
RP MLB AVG 44.5% 34.5% 27.0% 38.5% 36.5% 22.8% 40.7% 29.9% 43.1% 6.6%
Career 45.1% 39.2% 26.8% 34.0% 34.8% 23.2% 42.0% 26.3% 47.0% 6.9%

Seth Halvorsen Approach › Counts

Hide 2026 MLB Percentile | Hide 2026 MLB Average
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 59.2% 14.1% 27.7% 15.3% 55.8% 43.2% 15.3% 25.0% 16.3%
RP MLB Percentile 57 23 27 59 17 10 4 37 27
RP MLB AVG 58.6% 12.3% 29.6% 14.5% 60.6% 49.8% 21.0% 26.4% 19.2%
Career 59.8% 12.1% 28.9% 15.5% 60.1% 47.3% 18.4% 22.4% 19.2%

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 375 4.53 37.3% 19.2% 43.5% -6.1% 4.8% 1.6 +3 5.86
RP MLB Percentile 32 1 1 76 4 4 43 45 25 3
RP MLB AVG 509 4.93 45.8% 17.3% 36.9% 8.9% 4.6% 0.7 +0 3.55
Career 1,189 4.78 41.8% 19.8% 38.4% 3.4% 5.1% 10.6 +9 4.05
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