2026 Stats
W-L
0-0
ERA
0.00
WHIP
0.00
K
0
SV
0
Rest-of-Season Projections
2026 Fantasy Outlook
Halvorsen's ratios were lackluster, but when he was healthy, the right-hander proved to be the most reliable option within a pen that ranked 29th in bullpen ERA (5.18). He led Colorado with 11 saves (38 percent team save share), but might have approached 20 if not for a season-ending elbow injury last August. Among relief pitchers who pitched a minimum of 30 innings in 2025, Halvorsen ranked third in average fastball velocity (100.0 mph) behind Mason Miller (101.2 mph) and Jhoan Duran (100.5 mph). Despite regularly hitting triple-digits on the radar gun, Halvorsen's 20.9 percent strikeout rate was below average, but his solid swinging strike percentage (13.3) suggests there is room for him to rebound in the K-department. Looking towards 2026, Halvorsen and Victor Vodnik figure to remain atop Colorado's hiearchy for saves. First, Halvorsen will need to prove he is past the elbow injury that cut his 2025 campaign short. Read Past Outlooks
Signed a one-year contract with the Rockies in March of 2026.
Optioned to Triple-A
The Rockies optioned Halvorsen to Triple-A Albuquerque on Tuesday, Kevin Henry of The Denver Gazette reports.
Analysis
Halvorsen entered spring training as a candidate for high-leverage work but pitched his way into a stint in the minors by yielding 12 runs with an ugly 4:12 K:BB over five innings of work. The hard thrower will try to get back on track at Albuquerque and could still have an important role in the Colorado bullpen down the line.
Halvorsen entered spring training as a candidate for high-leverage work but pitched his way into a stint in the minors by yielding 12 runs with an ugly 4:12 K:BB over five innings of work. The hard thrower will try to get back on track at Albuquerque and could still have an important role in the Colorado bullpen down the line.
Pitching Stats
Loading Pitching Stats...
2025 MLB Game Log
2025
2024
Minor League Game Log
Calculate Stats Over Time
Just click on any two dates.
Loading Minor League Pitching Game Log...
Left/Right Pitching Splits
Since 2024
-3%
BAA vs LHP
2026
No Stats
| BAA | K | BB | H | HR | |
|---|---|---|---|---|---|
| Since 2024vs Left | .250 | 20 | 13 | 26 | 6 |
| Since 2024vs Right | .258 | 29 | 10 | 23 | 3 |
| 2026vs Left | 0 | 0 | 0 | 0 | 0 |
| 2026vs Right | 0 | 0 | 0 | 0 | 0 |
| 2025vs Left | .263 | 12 | 11 | 20 | 5 |
| 2025vs Right | .284 | 24 | 10 | 21 | 2 |
| 2024vs Left | .214 | 8 | 2 | 6 | 1 |
| 2024vs Right | .133 | 5 | 0 | 2 | 1 |
Home/Away Pitching Splits
Since 2024
-44%
ERA at Home
2026
No Stats
| ERA | WHIP | IP | K/9 | BB/9 | |
|---|---|---|---|---|---|
| Since 2024Home | 3.16 | 1.15 | 31.1 | 10.6 | 3.2 |
| Since 2024Away | 5.66 | 1.74 | 20.2 | 5.2 | 5.2 |
| 2026Home | 0 | 0 | 0 | 0 | 0 |
| 2026Away | 0 | 0 | 0 | 0 | 0 |
| 2025Home | 4.07 | 1.36 | 24.1 | 10.7 | 4.1 |
| 2025Away | 6.46 | 1.89 | 15.1 | 4.1 | 5.9 |
| 2024Home | 0.00 | 0.43 | 7.0 | 10.3 | 0.0 |
| 2024Away | 3.38 | 1.31 | 5.1 | 8.4 | 3.4 |
Minor League Left/Right Pitching Splits (AAA)
Since 2024
-12%
BAA vs LHP
2026
No Stats
| BAA | K | BB | H | HR | |
|---|---|---|---|---|---|
| Since 2024vs Left | .200 | 4 | 3 | 3 | 0 |
| Since 2024vs Right | .227 | 11 | 2 | 5 | 1 |
| 2026vs Left | .000 | 0 | 1 | 0 | 0 |
| 2026vs Right | .000 | 0 | 0 | 0 | 0 |
| 2025vs Left | 0 | 0 | 0 | 0 | 0 |
| 2025vs Right | 0 | 0 | 0 | 0 | 0 |
| 2024vs Left | .231 | 4 | 2 | 3 | 0 |
| 2024vs Right | .238 | 11 | 2 | 5 | 1 |
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
1.71K/9
8.2BB/9
4.8HR/9
1.6Fastball
100.1 mphERA
4.99WHIP
1.56BABIP
.309GB/FB
2.07Left On Base
69.0%Exit Velocity
83.4 mphBarrels/BBE
5.0%Spin Rate
2129 rpmBalls Hit 95+ MPH
25.1%Swinging Strike
13.3%Prospect Rankings History
Our full prospect rankings are reserved for RotoWire subscribers.
Subscribe Now
Advanced Pitching Stats
Loading Advanced Pitching Stats...
Defensive Stats
Loading MLB Defensive Stats...
Stats Vs Today's Lineup
Want more matchup stats?
Loading Matchup Stats...
Our full team depth charts are reserved for RotoWire subscribers.
Subscribe Now
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.
More Fantasy News
Not expected to make roster
Halvorsen is not expected to make the Rockies' Opening Day roster, Kevin Henry of The Denver Gazette reports.
Analysis
Subscribe now to instantly reveal our take on this news.
Subscribe now to instantly reveal our take on this news.
Faces hitters Monday
Halvorsen (elbow) tossed a live batting practice session Monday.
Analysis
Subscribe now to instantly reveal our take on this news.
Subscribe now to instantly reveal our take on this news.
Resumes throwing
Halvorsen (elbow) has resumed throwing from 60 feet and is hoping to return from the injured list prior to the end of the season, MLB.com reports.
Analysis
Subscribe now to instantly reveal our take on this news.
Subscribe now to instantly reveal our take on this news.
Not making much progress
Halvorsen (elbow) is continuing his rehab, but he will not begin the next steps toward his return to the field until early September, MLB.com reports.
Analysis
Subscribe now to instantly reveal our take on this news.
Subscribe now to instantly reveal our take on this news.
Could return in 2025
Rockies interim manager Warren Schaeffer said Monday that Halvorsen has been diagnosed with a mild flexor strain in his right elbow and could be activated from the 15-day injured list prior to the end of the season, Thomas Harding of MLB.com reports.
Analysis
Subscribe now to instantly reveal our take on this news.
Subscribe now to instantly reveal our take on this news.
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.