2025 Stats
W-L
1-2
ERA
4.31
WHIP
1.40
K
29
SV
6
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
Secures sixth save
Halvorsen allowed a hit in a scoreless inning and earned a save over Arizona on Sunday. He struck out one batter.
ANALYSIS
Halvorsen worked around a two-out double by Randal Grichuk to close out the 4-2 victory Sunday. It was Halvorsen's first appearance since blowing a save chance against the Nationals on Thursday. He's now converted six of his nine save opportunities while producing a 4.31 ERA and a 29:14 K:BB through 31.1 innings.
Halvorsen worked around a two-out double by Randal Grichuk to close out the 4-2 victory Sunday. It was Halvorsen's first appearance since blowing a save chance against the Nationals on Thursday. He's now converted six of his nine save opportunities while producing a 4.31 ERA and a 29:14 K:BB through 31.1 innings.
Pitching Stats
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2025
2024
Minor League Game Log
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Pitching Appearances Breakdown
Average Pitch Count
15
Last 10 Games
13
Last 5 Games
12
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
-2%
BAA vs LHP
2025
-8%
BAA vs LHP
| BAA | K | BB | H | HR | ||||
|---|---|---|---|---|---|---|---|---|
| Since 2023vs Left | .238 | 17 | 8 | 20 | 5 | |||
| Since 2023vs Right | .243 | 25 | 8 | 18 | 2 | |||
| 2025vs Left | .250 | 9 | 6 | 14 | 4 | |||
| 2025vs Right | .271 | 20 | 8 | 16 | 1 | |||
| 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
-3%
ERA at Home
2025
-23%
ERA on Road
| ERA | WHIP | IP | K/9 | BB/9 | |||||
|---|---|---|---|---|---|---|---|---|---|
| Since 2023Home | 3.46 | 1.12 | 26.0 | 11.1 | 2.8 | ||||
| Since 2023Away | 3.57 | 1.42 | 17.2 | 5.1 | 4.1 | ||||
| 2025Home | 4.74 | 1.37 | 19.0 | 11.4 | 3.8 | ||||
| 2025Away | 3.65 | 1.46 | 12.1 | 3.6 | 4.4 | ||||
| 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
2.07K/9
8.3BB/9
4.0HR/9
1.4Fastball
100.1 mphERA
4.31WHIP
1.40BABIP
.296GB/FB
2.38Left On Base
67.6%Exit Velocity
83.2 mphBarrels/BBE
5.3%Spin Rate
2096 rpmBalls Hit 95+ MPH
25.6%Swinging Strike
13.9%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
Can't convert save chance
Halvorsen (1-2) blew the save and took the loss in Thursday's 4-3 extra-innings loss to Washington, allowing two runs (one earned) on one hit over two-thirds of an inning.
ANALYSIS
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Locks down fifth save
Halvorsen picked up the save in Wednesday's 3-2 win over the Nationals, striking out two in a perfect ninth inning.
ANALYSIS
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Works fifth save
Halvorsen picked up the save, walking one batter in the process, during Monday's 6-4 win over the Nationals.
ANALYSIS
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Picks up third save
Halvorsen didn't allow a baserunner and earned the save with a scoreless ninth inning Tuesday against the Marlins.
ANALYSIS
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Knocked around in defeat
Halvorsen (0-1) took the loss and was charged with a blown save Monday against the Phillies, allowing four runs on five hits while striking out one batter over two-thirds of an inning.
ANALYSIS
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Latest Fantasy Rumors
Target for Mets?
Halvorsen is listed as a potential trade target for the Mets, according to Jim Bowden of The Athletic.
ANALYSIS
The Mets need to find a way to bolster their bullpen before the July 31 trade deadline since they're likely to be in a tight race with Philadelphia and Atlanta for a playoff berth. On that note, Halvorsen is a player who could boost the team's bullpen dramatically. The right-hander owns a 4.31 ERA across 32 appearances this season.
The Mets need to find a way to bolster their bullpen before the July 31 trade deadline since they're likely to be in a tight race with Philadelphia and Atlanta for a playoff berth. On that note, Halvorsen is a player who could boost the team's bullpen dramatically. The right-hander owns a 4.31 ERA across 32 appearances this season.