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 Arrighetti'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
#406
ADP
Signed a one-year contract with the Astros in March of 2026.
Fans seven during loss Sunday
PHouston Astros
June 14, 2026
Arrighetti (7-2) took the loss Sunday against the Royals, allowing four runs on eight hits and one walk while striking out seven over six innings.
Analysis
Sunday's outing was one of Arrighetti's roughest of the season, as the right-hander surrendered a season-high eight hits. The four runs allowed matched his season high. After limiting opponents to two or fewer earned runs in each of his first eight starts, he has now yielded three or more runs in three straight outings. The regression is surprising given his underlying metrics -- Arrighetti entered the start with a 29.5 percent hard-hit rate allowed, ranking in the 94th percentile among MLB pitchers. Despite the recent slide, he still owns an excellent 2.57 ERA, 1.22 WHIP and 60:32 K:BB across 63 innings. Arrighetti is scheduled to face Cleveland in his next start.
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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
94
Last 10 Games
94
Last 5 Games
92
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
 
 
-3%
BAA vs LHP
2026
 
 
-12%
BAA vs LHP
2025
 
 
-28%
BAA vs RHP
2024
 
 
-8%
BAA vs LHP
BAA Batters K BB H 2B 3B HR
Since 2024vs Left .231 566 152 77 110 24 2 12
Since 2024vs Right .239 490 110 40 104 19 0 18
2026vs Left .188 146 36 23 22 4 0 0
2026vs Right .213 123 24 9 23 3 0 3
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
 
 
-30%
ERA at Home
2026
 
 
-20%
ERA at Home
2025
 
 
-76%
ERA at Home
2024
 
 
-18%
ERA at Home
ERA WHIP IP W L SV K/9 BB/9 HR/9
Since 2024Home 3.34 1.11 110.1 7 6 0 10.2 3.8 1.1
Since 2024Away 4.80 1.56 133.0 8 14 0 9.3 4.8 1.1
2026Home 2.22 0.95 24.1 3 0 0 9.6 3.7 0.7
2026Away 2.79 1.40 38.2 4 2 0 7.9 5.1 0.2
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
1.88
 
K/9
8.6
 
BB/9
4.6
 
HR/9
0.4
 
Fastball
92.5 mph
 
ERA
2.57
 
WHIP
1.22
 
BABIP
.263
 
GB/FB
1.14
 
Left On Base
78.3%
 
Exit Velocity
80.8 mph
 
Barrels/BBE
3.1%
 
Spin Rate
2471 rpm
 
Balls Hit 95+ MPH
19.2%
 
Swinging Strike
10.2%
 
Prospect Rankings History
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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
Records quality start Monday
PHouston Astros
June 8, 2026
Arrighetti tossed six innings against the Angels on Monday, allowing three runs on four hits and four walks while striking out seven batters in a no-decision.
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First rough start of season
PHouston Astros
June 3, 2026
Arrighetti allowed four runs on six hits, a walk and a hit batsman while striking out three over four innings in a no-decision Wednesday versus the Pirates.
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Notches seventh win
PHouston Astros
May 29, 2026
Arrighetti (7-1) earned the win Thursday against the Rangers after tossing six innings of one-run ball, allowing three hits and a walk while fanning three.
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Blanks Cubs for sixth win
PHouston Astros
May 22, 2026
Arrighetti (6-1) picked up the win Friday, allowing two hits and four walks over five scoreless innings in a 4-2 victory over the Cubs. He struck out five.
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Tosses 7.1 scoreless innings
PHouston Astros
May 16, 2026
Arrighetti (5-1) earned the win Friday against the Rangers after tossing 7.1 scoreless innings, allowing one hit and four walks while striking out five.
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Latest Fantasy Rumors
Named POTM for May
PHouston Astros
June 3, 2026
Arrighetti has been named the American League Pitcher of the Month for May, according to Theo DeRosa of MLB.com.
Analysis
After failing to crack Houston's Opening Day rotation, Arrighetti has been one of the best starters in baseball since getting called up in mid-April. He posted a 4-1 record and 0.93 ERA across 29 frames in May and owns a 1.34 ERA in eight starts this season. Among starters with at least 40 innings. that's the second-best ERA in all of baseball behind Shohei Ohtani.
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