Probetrics — Sports Analytics
MLB Prop Board

Spencer Arrighetti

Houston Astros · P · Bats R · Throws R

Tonight's line
15.5
Model proj
15.75
Edge
+3.1%
Trending splitsHome 83%(6)Away 50%(8)
Last 20
60%12/20 over 15.5
Window avg
15.85
Median
18.0
L5
60%
3/5
L10
70%
7/10
L20
60%
12/20
2026
67%
6/9
Avg15.07
StreakW1

Parlay pairs — when Spencer Arrighetti clears 15.5 Pitcher Outs, these hit too

Yainer Diaz o0.5 Hits
hits when he does 81% · base 68% · n=16 · -230 DraftKings
Yordan Alvarez o1.5 Total Bases
hits when he does 62% · base 48% · n=26 · -125 Bovada

Correlation from shared games in our database — books price correlated same-game legs accordingly; treat combined odds as an estimate.

Pitcher Outslast 20 vs 15.5

official box scores
12@ TOR07/0218@ OAK07/2217vs CWS08/1618@ BAL08/222@ CIN09/0420vs OAK09/1015@ SD09/1618vs NYM03/2915vs BOS08/1215@ DET08/1819vs LAA08/3018vs COL04/1515@ CLE04/2022vs TEX05/1518@ TEX05/2812vs PIT06/0318@ LAA06/0818vs CLE06/209@ DET06/2618vs TB07/0315.5

Tonight's odds — Pitcher Outs

BookLineOverUnder
DraftKings15.5-111-119
Bovada15.5-115-125

Line movement — Pitcher Outs

From our own market snapshots (every poll since lines opened).

15.512:11 AM ET12:11 AM ET
DraftKingsBovada

League vs WSH Pitcher Outs, 2026

Last 14 qualifying performances against them · 5/14 would clear tonight's 15.5

Tatsuya Imai HOU07/0711
Mike Burrows HOU07/0613
Bubba Chandler PIT07/0512
Braxton Ashcraft PIT07/0417
Mitch Keller PIT07/0318
Payton Tolle BOS07/019
Connelly Early BOS06/3012
Ranger Suarez BOS06/2918
Kyle Bradish BAL06/2812
Brandon Young BAL06/2715
Trevor Rogers BAL06/2619
Cristopher Sánchez PHI06/2515
Aaron Nola PHI06/2415
Jesús Luzardo PHI06/2320