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
#405
ADP
Signed a one-year contract with the Astros in March of 2026.
Picks up fourth win
PHouston Astros
May 2, 2026
Arrighetti (4-0) earned the win against the Red Sox on Saturday, allowing one run on five hits and five walks while striking out four across five innings.
Analysis
It was by no means a seamless outing for Arrighetti, who loaded the bases in both the third and fifth frames. However, he yielded just one run on a sacrifice fly from Willson Contreras in the fifth, and Arrighetti got enough run support to come away with his fourth victory of the season, which is tied for second-most in the American League. He'll bring a 1.96 ERA and 1.30 WHIP (across 23 innings) into his next start, tentatively slated for next weekend on the road against the Reds.
Read More News
Pitching Stats
Loading Pitching Stats...
2026 MLB Game Log
2026
2025
2024
2026 MLB Game Log
Calculate Stats Over Time
Just click on any two dates.
Scoring
FanDuel
DraftKings
Yahoo DFS
Sorare
Loading Pitching Game Log...
2025 MLB Game Log
Calculate Stats Over Time
Just click on any two dates.
Scoring
FanDuel
DraftKings
Yahoo DFS
Sorare
Loading Pitching Game Log...
2024 MLB Game Log
Calculate Stats Over Time
Just click on any two dates.
Scoring
FanDuel
DraftKings
Yahoo DFS
Sorare
Loading Pitching Game Log...
Minor League Game Log
Calculate Stats Over Time
Just click on any two dates.
Loading Minor League Pitching Game Log...
Pitching Appearances Breakdown
Average Pitch Count
95
Last 10 Games
95
Last 5 Games
95
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
Even Split
2026
 
 
-21%
BAA vs RHP
2025
 
 
-28%
BAA vs RHP
2024
 
 
-8%
BAA vs LHP
BAA Batters K BB H 2B 3B HR
Since 2024vs Left .240 487 133 66 99 23 2 12
Since 2024vs Right .240 401 94 33 86 17 0 16
2026vs Left .212 67 17 12 11 3 0 0
2026vs Right .167 34 8 2 5 1 0 1
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
 
 
-49%
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 3.36 1.12 99.0 6 6 0 10.6 3.7 1.2
Since 2024Away 5.35 1.66 104.1 6 12 0 9.5 5.0 1.3
2026Home 1.38 0.85 13.0 2 0 0 12.5 3.5 0.7
2026Away 2.70 1.90 10.0 2 0 0 6.3 8.1 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
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.
  • 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
1.79
 
K/9
9.8
 
BB/9
5.5
 
HR/9
0.4
 
Fastball
92.5 mph
 
ERA
1.96
 
WHIP
1.30
 
BABIP
.273
 
GB/FB
1.05
 
Left On Base
87.4%
 
Exit Velocity
81.9 mph
 
Barrels/BBE
4.4%
 
Spin Rate
2443 rpm
 
Balls Hit 95+ MPH
21.2%
 
Swinging Strike
11.4%
 
Prospect Rankings History
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
Recent RotoWire Articles Featuring Spencer Arrighetti See More
Recent RotoWire Articles Featuring Spencer Arrighetti See More
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
Strikes out eight in gem
PHouston Astros
April 26, 2026
Arrighetti (3-0) notched the win Sunday against the Yankees, allowing one run on three hits and one walk in seven innings. He struck out eight.
Analysis
Subscribe now to instantly reveal our take on this news.
Five decent innings in second win
PHouston Astros
April 20, 2026
Arrighetti (2-0) notched the win Monday against the Guardians, allowing two runs on five hits and four walks in five innings. He struck out three.
Analysis
Subscribe now to instantly reveal our take on this news.
Set to start Monday
PHouston Astros
April 19, 2026
Arrighetti will make his next start Monday against the Guardians in Cleveland, Chandler Rome of The Athletic reports.
Analysis
Subscribe now to instantly reveal our take on this news.
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
Subscribe now to instantly reveal our take on this 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.
Analysis
Subscribe now to instantly reveal our take on this news.
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.
See All MLB Rumors