2025 Stats
W-L
0-0
ERA
0.00
WHIP
0.00
K
1
SV
1
Rest-of-Season Projections
2025 Fantasy Outlook
Halvorsen, a seventh-round draft pick by the Rockies in 2023, made his major-league debut last August after compiling a 4.47 ERA and 1.47 WHIP across 44.1 innings between Colorado's Double-A and Triple-A affiliates. The 6-foot-2 right-hander featured a four-pitch mix headlined by a 100 mph fastball that he tossed 37 percent of the time, but it was his splitter (28 percent usage) and slider (16 percent) that produced the most swing-and-miss. Halvorsen pitched well enough in his limited big-league sample (13:2 K:BB over 12.1 frames) to earn save chances over the final few weeks of the season, recording two in three opportunities. The 25-year-old's minor league track record suggest ratios and walks might be an issue, but Halvorsen's raw talent stands out among other relievers in Colorado's bullpen. He's worth gambling on as a closer-in-waiting type for 2025, but his save ceiling is capped due to the team he plays for. Read Past Outlooks
Earns first save
Halvorsen was perfect Saturday, striking out one without allowing a baserunner to secure a four-out save against the Rays.
ANALYSIS
Halvorsen averaged 99 mph on both his fastball and sinker, needing just 14 pitches to secure the Rockies' first save opportunity of the season. The 25-year-old impressed late in 2024 with a 1.46 ERA in 12.1 innings and made a strong case for more save chances with his sharp 2025 debut.
Halvorsen averaged 99 mph on both his fastball and sinker, needing just 14 pitches to secure the Rockies' first save opportunity of the season. The 25-year-old impressed late in 2024 with a 1.46 ERA in 12.1 innings and made a strong case for more save chances with his sharp 2025 debut.
Pitching Stats
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2025
2024
Minor League Game Log
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Pitching Appearances Breakdown
Average Pitch Count
14
Last 10 Games
14
Last 5 Games
14
How many pitches does Seth Halvorsen generally throw?
1-10
11-20
21-30
31-40
41-50
51-60
61-70
71-80
81-90
91-100
101-110
111-120
121+
What part of the game does Seth Halvorsen generally pitch?
1st
2nd
3rd
4th
5th
6th
7th
8th
9th
Extra
% Games Reaching Innings Threshold
% Games By Number of Innings Pitched
Left/Right Pitching Splits
Since 2023
-46%
BAA vs RHP
2025
No Stats
| BAA | K | BB | H | HR | ||||
|---|---|---|---|---|---|---|---|---|
| Since 2023vs Left | .207 | 8 | 2 | 6 | 1 | |||
| Since 2023vs Right | .111 | 6 | 0 | 2 | 1 | |||
| 2025vs Left | .000 | 0 | 0 | 0 | 0 | |||
| 2025vs Right | .000 | 1 | 0 | 0 | 0 | |||
| 2024vs Left | .214 | 8 | 2 | 6 | 1 | |||
| 2024vs Right | .133 | 5 | 0 | 2 | 1 | |||
| 2023vs Left | 0 | 0 | 0 | 0 | 0 | |||
| 2023vs Right | 0 | 0 | 0 | 0 | 0 | |||
| More Splits→ | View More Split Stats | |||||||
Home/Away Pitching Splits
Since 2023
-100%
ERA at Home
2025
No Stats
| ERA | WHIP | IP | K/9 | BB/9 | |||||
|---|---|---|---|---|---|---|---|---|---|
| Since 2023Home | 0.00 | 0.43 | 7.0 | 10.3 | 0.0 | ||||
| Since 2023Away | 2.70 | 1.05 | 6.2 | 8.1 | 2.7 | ||||
| 2025Home | 0 | 0 | 0 | 0 | 0 | ||||
| 2025Away | 0.00 | 0.00 | 1.1 | 6.8 | 0.0 | ||||
| 2024Home | 0.00 | 0.43 | 7.0 | 10.3 | 0.0 | ||||
| 2024Away | 3.38 | 1.31 | 5.1 | 8.4 | 3.4 | ||||
| 2023Home | 0 | 0 | 0 | 0 | 0 | ||||
| 2023Away | 0 | 0 | 0 | 0 | 0 | ||||
| More Splits→ | View More Split Stats | ||||||||
Stat Review
How does Seth Halvorsen compare to other relievers?
This section compares his stats with all relief pitcher seasons from the previous three seasons (minimum 30 innings)*. The bar represents the player's percentile rank. For example, if the bar is halfway across, then the player falls into the 50th percentile for that stat and it would be considered average.
* Exit Velocity, Barrels/BBE %, Balls Hit 95+ MPH %, and Spin Rate are benchmarked against 2019 data (min 30 IP). See here for more exit velocity/barrels stats plus an explanation of current limitations with that data set.
* Exit Velocity, Barrels/BBE %, Balls Hit 95+ MPH %, and Spin Rate are benchmarked against 2019 data (min 30 IP). See here for more exit velocity/barrels stats plus an explanation of current limitations with that data set.
K/BB
0.00K/9
6.8BB/9
0.0HR/9
0.0Fastball
0.0 mphERA
0.00WHIP
0.00BABIP
.000GB/FB
2.00Left On Base
0.0%Exit Velocity
0.0 mphBarrels/BBE
0.0%Spin Rate
0 rpmBalls Hit 95+ MPH
0.0%Swinging Strike
7.1%Prospect Rankings History
Advanced Pitching Stats
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Defensive Stats
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Stats Vs Today's Lineup
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More Fantasy News
Implodes against Reds
Halvorsen allowed five earned runs on three hits and two walks while striking out one across two-thirds of an inning in Monday's Cactus League game against the Reds.
ANALYSIS
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In mix for saves
Halvorsen is among the candidates to open the season as the Rockies' closer, Patrick Saunders of the Denver Post reports.
ANALYSIS
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Nabs another save
Halvorsen picked up the save Thursday against the Cardinals, allowing one hit and no walks with one strikeout across a scoreless ninth inning.
ANALYSIS
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Picks up first save
Halvorsen picked up the save over the Dodgers on Saturday, allowing one hit and two walks in a scoreless ninth inning.
ANALYSIS
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Set for MLB debut
The Rockies selected Halvorsen's contract from Triple-A Albuquerque on Friday.
ANALYSIS
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