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Relief Pitcher · Colorado Rockies

Seth Halvorsen

RHP · Throws Right · Age 26Reliever
ERA
4.50
FIP
–
IP
20.0
W-L
1-1
WHIP
1.90
K%
17.0
BB%
16.0
GB%
–
K/9
7.7
HR/9
1.4
Drafted by the Colorado Rockies in 2023 (round 7). He made his MLB debut on August 30, 2024.Facts: MLB StatsAPI (people · transactions)
No scheduled start today. The model projection and lineup matchup appear on start days.

Four-Seam Fastball

FF · lead pitch

57% of pitches · .376 xwOBA allowed · 168 BIP · where it goes, what it costs

Pitcher Locations
where he throws it · catcher’s view
3%4%5%2%2%3%8%8%5%3%4%7%14%10%6%0%1%2%3%1%0%2%2%3%2%
Rare 0% · Common 10% · Very common 20%+
xwOBA Allowed
damage done by zone · all batters
.696.487.187.703–.425.345.580.200–.603.322.335.331.500.000.127.348.699––.000.020.701–
Cold .200 · Avg .310 · Hot .500+
Expected Damage
locations × damage zones
.019.021.010.015–.014.027.049.010–.026.023.046.034.029.000.001.007.022––.000.000.018–
Low risk · Average · High-risk zone
Four-Seam Fastball (57% usage) has allowed .376 xwOBA over 168 balls in play — his most-used pitch.

Arsenal

usage × whiff, ranked

4 pitch types · 1,273-pitch sample · 2026/2025/2024 blend, weighted 4/3/1

Four-Seam Fastball FF
57% usage · 17% whiff · .376 xwOBA · 98.9 mph
Slider SL
23% usage · 38% whiff · .277 xwOBA · 86.5 mph
Splitter FS
18% usage · 28% whiff · .347 xwOBA · 89.7 mph
Unknown UN
1% usage
Whiff% Trend
last 8 outings · by pitch · min 5 swings per point
0102030405060706/96/126/136/156/266/286/308/11
Four-Seam FastballSliderSplitter
Hand Splits
K% + xwOBA allowed by batter side · 2026/2025/2024 blend, weighted 4/3/1
SplitK%xwOBASample
vs. LHB15.2 .368 156
vs. RHB22.3 .330 157
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Market lines

current pick’em lines by book · updates through the day

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DFS picks

today’s picks for this pitcher, probability-sorted · graded nightly

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