60-Day IL
Injury Thumb
Est. Return 7/28/2025
2025 Stats
W-L
1-1
ERA
5.59
WHIP
0.93
K
8
SV
0
Rest-of-Season Projections
2025 Fantasy Outlook
Arrighetti's rookie season had a little bit of everything for everyone, including his fans and his detractors. He had four different contests in which he struck out 10 or more batters, capped off by a 13 strikeout performance against Boston. Four other times, he allowed five or more earned runs, including seven in just 1.1 innings against Detroit. He twice allowed three homers in a contest, and yet struck out 27.1 percent of the batters he faced. However, it was that inconsistency that led to him winning just seven of his 28 starts for a team that won its division. The rookie lived and died off his curveball and sweeper, which collectively held opposing hitters to a .151 batting average, while the league hit .296 off the rest of his offerings. Arrighetti showed signs of progress in the second half, as three of the four aforementioned big strikeout games came after the break, and a reduction in his walk rate helped reduce his ERA two and a half runs from the first half. As long as his nonbreaking pitches are this hittable, homers will continue to be an issue for him in Houston, but reducing the walks can help offset some of that damage. That 21.4 percent K-BB percentage in the second half of the season is something to admire since his overall numbers somewhat mask that late-season goodness. Read Past Outlooks
Signed a one-year contract with the Astros in March of 2025.
Set to face hitters soon
Astros manager Joe Espada said Friday that Arrighetti (thumb) is expected to complete one more bullpen session before he faces live hitters, Matt Kawahara of the Houston Chronicle reports.
Analysis
Arrighetti completed 15- and 20-pitch bullpen sessions June 24 and June 27, respectively, so he'll presumably build on that pitch count while mixing in all of his offerings during his next side session. The right-hander will likely need to throw multiple live batting practice sessions before then heading out on a rehab assignment, perhaps shortly after the All-Star break. Arrighetti appears to be tracking toward a late-July or early-August return from the 60-day injured list, but a more precise target date won't come into focus until he's out on the rehab assignment.
Arrighetti completed 15- and 20-pitch bullpen sessions June 24 and June 27, respectively, so he'll presumably build on that pitch count while mixing in all of his offerings during his next side session. The right-hander will likely need to throw multiple live batting practice sessions before then heading out on a rehab assignment, perhaps shortly after the All-Star break. Arrighetti appears to be tracking toward a late-July or early-August return from the 60-day injured list, but a more precise target date won't come into focus until he's out on the rehab assignment.
Pitching Stats
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2025 MLB Game Log
2025
2024
Minor League Game Log
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Pitching Appearances Breakdown
Average Pitch Count
79
Last 10 Games
79
Last 5 Games
79
How many pitches does Spencer Arrighetti 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 Spencer Arrighetti 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
-10%
BAA vs LHP
2025
-69%
BAA vs LHP
| BAA | K | BB | H | HR | ||||
|---|---|---|---|---|---|---|---|---|
| Since 2023vs Left | .230 | 103 | 46 | 71 | 9 | |||
| Since 2023vs Right | .256 | 76 | 24 | 72 | 13 | |||
| 2025vs Left | .059 | 3 | 3 | 1 | 0 | |||
| 2025vs Right | .188 | 5 | 2 | 3 | 1 | |||
| 2024vs Left | .240 | 100 | 43 | 70 | 9 | |||
| 2024vs Right | .260 | 71 | 22 | 69 | 12 | |||
| 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
-27%
ERA at Home
2025
-88%
ERA at Home
| ERA | WHIP | IP | K/9 | BB/9 | |||||
|---|---|---|---|---|---|---|---|---|---|
| Since 2023Home | 3.86 | 1.18 | 74.2 | 10.6 | 3.1 | ||||
| Since 2023Away | 5.29 | 1.56 | 80.0 | 10.2 | 5.0 | ||||
| 2025Home | 1.50 | 0.50 | 6.0 | 7.5 | 3.0 | ||||
| 2025Away | 12.27 | 1.64 | 3.2 | 7.4 | 7.4 | ||||
| 2024Home | 4.06 | 1.24 | 68.2 | 10.9 | 3.1 | ||||
| 2024Away | 4.95 | 1.56 | 76.1 | 10.4 | 4.8 | ||||
| 2023Home | 0 | 0 | 0 | 0 | 0 | ||||
| 2023Away | 0 | 0 | 0 | 0 | 0 | ||||
| More Splits→ | View More Split Stats | ||||||||
Stat Review
How does Spencer Arrighetti compare to other starting pitchers?
This section compares his stats with all starting pitcher seasons from the previous three seasons (minimum 120 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 120 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 120 IP). See here for more exit velocity/barrels stats plus an explanation of current limitations with that data set.
K/BB
1.60K/9
7.4BB/9
4.7HR/9
0.9Fastball
93.7 mphERA
5.59WHIP
0.93BABIP
.135GB/FB
0.58Left On Base
39.5%Exit Velocity
85.6 mphBarrels/BBE
4.8%Spin Rate
2321 rpmBalls Hit 95+ MPH
31.0%Swinging Strike
14.6%Prospect Rankings History
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Defensive Stats
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2024 Fantasy Outlook
Thrust into the big-league rotation early in 2024 amid a slew of injuries, Arrighetti looks more like a streamer in very good matchups than an every-week consideration in mixed leagues. He was 93-97 mph with his fastball in his big-league debut but had sat in the low-90s in the minors, so perhaps he was a little juiced up. Arrighetti's high-80s cutter and low-80s sweeper are his go-to secondary offerings, with the sweeper grading as his best pitch. The 24-year-old righty has poor command, with his 9.1 percent walk rate at Double-A in 2023 the lone mark below 11 percent at any stop since 2022. He has gone fewer than five innings in all three of his 2024 starts, largely due to the fact he has walked 10 batters in 11.1 innings. If the Astros start getting starters back from the injured list, Arrighetti could head back to Triple-A or move into a long-relief role.
More Fantasy News
Completes bullpen session
Arrighetti (thumb) completed another bullpen session Friday, his second since landing on the injured list April 8, MLB.com reports.
Analysis
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Looks ready for mound work
Astros general manager Dana Brown said that Arrighetti (thumb) could throw a bullpen session Tuesday, Matt Kawahara of the Houston Chronicle reports.
Analysis
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Transferred to 60-day IL
Houston transferred Arrighetti (thumb) from the 15-day injured list to the 60-day IL on Saturday, Brian McTaggart of MLB.com reports.
Analysis
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Playing catch from 70 feet
Arrighetti (thumb) played catch from 70 feet while traveling with the Astros during their weekend series in Cleveland, Brian McTaggart of MLB.com reports.
Analysis
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Plays catch
Manager Joe Espada said Arrighetti (thumb) played catch Wednesday, Matt Kawahara of the Houston Chronicle reports.
Analysis
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Latest Fantasy Rumors
Top AL rookie in August
Arrighetti was named the American League Rookie of the Month for August on Tuesday.
Analysis
The rookie right-hander was inconsistent through his first 19 big-league starts as he closed July with a 5.58 ERA through 92 innings, but he got on track in August and posted a 1.95 ERA, 0.90 WHIP and 47:10 K:BB across 32.1 innings. Arrighetti had a 3-2 record during the month but posted double-digit strikeouts in three of his five starts. The 24-year-old should stick in the rotation for the rest of the season, with Ronel Blanco likely to move to the bullpen for the stretch run. A strong finish could have Arrighetti in the mix to make postseason starts, though right now he may be on the outside looking in for a pared-down playoff rotation.
The rookie right-hander was inconsistent through his first 19 big-league starts as he closed July with a 5.58 ERA through 92 innings, but he got on track in August and posted a 1.95 ERA, 0.90 WHIP and 47:10 K:BB across 32.1 innings. Arrighetti had a 3-2 record during the month but posted double-digit strikeouts in three of his five starts. The 24-year-old should stick in the rotation for the rest of the season, with Ronel Blanco likely to move to the bullpen for the stretch run. A strong finish could have Arrighetti in the mix to make postseason starts, though right now he may be on the outside looking in for a pared-down playoff rotation.