Spencer Arrighetti

Spencer Arrighetti

26-Year-Old PitcherSP
Houston Astros
2026 Fantasy Outlook
Coming off a rookie season that saw him strike out 171 batters over 145 innings, Arrighetti had some buzz in fantasy drafts last spring. Unfortunately, injuries limited the 26-year-old to just seven starts and 35.1 innings for the Astros in 2025. The primary culprit in Arrighett's lost season was a freak accident during batting practice in early April that resulted in a fractured right thumb and four-month absence. Arrighetti then had all of September wiped out by right elbow inflammation, though he's expected to enter 2026 with a clean bill of health. What Arrighetti did in a limited sample in 2025 didn't quell concerns about his control (12.8 percent walk rate) or home run issues (six allowed in 35.1 frames), and his strikeout rate dipped below 20 percent. The swing-and-miss should come back, but the righty is likely to be a volatile fantasy commodity even if he stays healthy in 2026. Read Past Outlooks
RANKS
Rest of Season
From Preseason
#405
ADP
Signed a one-year contract with the Astros in March of 2026.
Fans 10, earns win Wednesday
PHouston Astros
April 16, 2026
Arrighetti (1-0) earned the win Wednesday against the Rockies after tossing six innings of one-run ball, striking out 10 while allowing two hits and four walks.
Analysis
The four free passes were a bit concerning for Arrighetti, who tossed 61 of his 100 pitches for strikes, but he delivered an excellent performance in what was a favorable matchup on paper. Given all the injuries in the Astros' rotation, Arrighetti isn't going back to Triple-A Sugar Land any time soon, and he lines up to make his next start next week on the road against the Guardians.
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Pitching Stats
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2026 MLB Game Log
2026
2025
2024
2026 MLB Game Log
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2025 MLB Game Log
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2024 MLB Game Log
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Pitching Appearances Breakdown
Average Pitch Count
100
Last 10 Games
100
Last 5 Games
100
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+
 
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+
 
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
 
 
 
1st
 
 
 
2nd
 
 
 
3rd
 
 
 
4th
 
 
 
5th
 
 
 
6th
 
 
 
7th
 
 
 
8th
 
 
 
9th
 
Extra
 
 
 
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 2024
 
 
-1%
BAA vs RHP
2026
 
 
-100%
BAA vs RHP
2025
 
 
-28%
BAA vs RHP
2024
 
 
-8%
BAA vs LHP
BAA Batters K BB H 2B 3B HR
Since 2024vs Left .243 436 122 57 90 22 2 12
Since 2024vs Right .240 378 90 32 81 16 0 15
2026vs Left .182 16 6 3 2 2 0 0
2026vs Right .000 11 4 1 0 0 0 0
2025vs Left .265 81 16 11 18 3 1 3
2025vs Right .190 75 15 9 12 1 0 3
2024vs Left .240 339 100 43 70 17 1 9
2024vs Right .260 292 71 22 69 15 0 12
More Splits View More Split Stats
Home/Away Pitching Splits
Since 2024
 
 
-37%
ERA at Home
2026
 
 
-100%
ERA on Road
2025
 
 
-76%
ERA at Home
2024
 
 
-18%
ERA at Home
ERA WHIP IP W L SV K/9 BB/9 HR/9
Since 2024Home 3.52 1.15 92.0 5 6 0 10.7 3.9 1.2
Since 2024Away 5.63 1.63 94.1 4 12 0 9.8 4.7 1.4
2026Home 1.50 1.00 6.0 1 0 0 15.0 6.0 0.0
2026Away 0 0 0 0 0 0 0 0 0
2025Home 2.08 0.87 17.1 1 1 0 8.3 6.2 0.5
2025Away 8.50 1.94 18.0 0 4 0 7.5 4.0 2.5
2024Home 4.06 1.24 68.2 3 5 0 10.9 3.1 1.4
2024Away 4.95 1.56 76.1 4 8 0 10.4 4.8 1.2
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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.
  • K/BB
    Strikeout to walk ratio.
  • K/9
    Average strikeouts per nine innings.
  • BB/9
    Average walks per nine innings.
  • HR/9
    Average home runs allowed per nine innings.
  • Fastball
    Average fastball velocity.
  • ERA
    Earned run average. The average earned runs allowed per nine innings.
  • WHIP
    Walks plus hits per inning pitched.
  • BABIP
    Batting average on balls in play. Measures how many balls in play against a pitcher go for hits.
  • GB/FB
    Groundball to flyball ratio. The higher the number, the more likely a pitcher is to induce groundballs.
  • Left On Base
    The percentage of base runners that a pitcher strands on base over the course of a season.
  • Exit Velocity
    The speed of the baseball as it comes off the bat, immediately after a batter makes contact.
  • Barrels/BBE
    The percentage of batted ball events resulting in a Barrel. A Barrel is a batted ball with similar exit velocity and launch angle to past ones that led to a minimum .500 batting average and 1.500 slugging percentage.
  • Spin Rate
    Spin Rate is the rate of spin on a baseball after it is released. It is measured in revolutions per minute (rpm).
  • Balls Hit 95+ MPH
    The percentage of batted balls hit that met or exceeded the 95 MPH threshold.
  • Swinging Strike
    The percentage of pitches that result in a swing and a miss.
K/BB
2.50
 
K/9
15.0
 
BB/9
6.0
 
HR/9
0.0
 
Fastball
0.0 mph
 
ERA
1.50
 
WHIP
1.00
 
BABIP
.224
 
GB/FB
1.25
 
Left On Base
83.3%
 
Exit Velocity
0.0 mph
 
Barrels/BBE
0.0%
 
Spin Rate
0 rpm
 
Balls Hit 95+ MPH
0.0%
 
Swinging Strike
19.0%
 
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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Recent RotoWire Articles Featuring Spencer Arrighetti See More
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Past Fantasy Outlooks
2025
2024
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.
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
Recalled for season debut
PHouston Astros
April 15, 2026
The Astros recalled Arrighetti from Triple-A Sugar Land on Wednesday, Brian McTaggart of MLB.com reports.
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Set to start against Colorado
PHouston Astros
April 14, 2026
Arrighetti will be recalled from Triple-A Sugar Land to start against the Rockies on Wednesday or Thursday, Brian McTaggart of MLB.com reports.
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Stellar numbers at Triple-A
PHouston Astros
April 10, 2026
Arrighetti boasts a 1.26 ERA, 0.77 WHIP and 20:6 K:BB over 14.1 innings in his first three starts with Triple-A Sugar Land.
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Opening season in minors
PHouston Astros
March 23, 2026
The Astros optioned Arrighetti to Triple-A Sugar Land on Monday, Matt Kawahara of the Houston Chronicle reports.
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Mixed results to start spring
PHouston Astros
March 1, 2026
Arrighetti allowed four runs on three hits and a walk across two innings in Friday's Grapefruit League matchup with Washington. He struck out four.
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Latest Fantasy Rumors
Top AL rookie in August
PHouston Astros
September 4, 2024
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.
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