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Relief Pitcher · Colorado Rockies

Seth Halvorsen

RHP · Throws Right · Age 26Reliever
ERA
5.90
FIP
–
IP
29.0
W-L
1-2
WHIP
1.72
K%
16.3
BB%
12.1
GB%
–
K/9
7.1
HR/9
1.9
Drafted by the Colorado Rockies in 2023 (round 7). He made his MLB debut on August 30, 2024.Facts: MLB StatsAPI (people · transactions)
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Four-Seam Fastball

FF · lead pitch

56% of pitches · .391 xwOBA allowed · 182 BIP · where it goes, what it costs

Pitcher Locations
where he throws it · catcher’s view
3%4%5%2%1%3%8%9%4%3%5%7%14%10%6%1%1%2%3%1%0%2%2%2%2%
Rare 0% · Common 10% · Very common 20%+
xwOBA Allowed
damage done by zone · all batters
.696.487.253.703–.425.317.598.200–.703.366.318.392.500.000.127.348.699––.000.020.701–
Cold .200 · Avg .310 · Hot .500+
Expected Damage
locations × damage zones
.018.021.012.014–.014.025.055.009–.034.025.045.041.029.000.001.007.020––.000.000.017–
Low risk · Average · High-risk zone
Four-Seam Fastball (56% usage) has allowed .391 xwOBA over 182 balls in play — his most-used pitch.

Arsenal

usage × whiff, ranked

5 pitch types · 1,409-pitch sample · 2026/2025/2024 blend, weighted 4/3/1

Four-Seam Fastball FF
56% usage · 16% whiff · .391 xwOBA · 98.9 mph
Slider SL
24% usage · 36% whiff · .247 xwOBA · 86.7 mph
Splitter FS
18% usage · 26% whiff · .354 xwOBA · 89.3 mph
Sinker SI
1% usage · .219 xwOBA
Unknown UN
1% usage
Whiff% Trend
last 8 outings · by pitch · min 5 swings per point
01020309/19/49/79/99/129/169/179/19
Four-Seam FastballSliderSplitter
Hand Splits
K% + xwOBA allowed by batter side · 2026/2025/2024 blend, weighted 4/3/1
SplitK%xwOBASample
vs. LHB14.7 .367 173
vs. RHB21.4 .329 181
Live · client-hydrated

Market lines

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

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Live · client-hydrated

DFS picks

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

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