MLB matchup analysis

Astros vs Phillies Prediction, Odds and Model Pick

Wednesday, September 9, 2026 at Citizens Bank Park · 6:40 PM ET

Official Pick

Leo prediction: Philadelphia Phillies moneyline

Lab Rating
7.4/10
Model lean
Phillies 67.8%
Market probability
60.8%
Model edge
+7.0%
Best moneyline
-172
Sportsbooks checked
4
Leo model
67.8%
Market
60.8%

The case for Philadelphia Phillies

Starting pitcher edge: 10 points
Leo gives Cristopher Sánchez a 10-point edge over Hunter Brown, driven mainly by BB/9 (2.0 vs 4.5) and K-BB% (21.6% vs 14.0%).

The case for Houston Astros

The case is thin
The model finds little going Houston Astros's way — it trails on the pitching plan, bullpen, and recent form. The main path to a Houston Astros win is variance.

What to watch

Cold stretch at the plate
Philadelphia Phillies is -0.016 wOBA below its own season form.

Why the setup score is what it is

Conviction: 6.41/10
Leo's win probability for Philadelphia Phillies (67.8%) is well clear of a coin flip -- this is a real, stated lean, not a guess.
Pitching plan: 37.33/40
Cristopher Sánchez rates 76 on Leo's pitcher score, judged on its own merits (50-80 is the credited range). That is a strong start on its own, and it earns most or all of the available credit here.
Offense: 30.02/50
Philadelphia Phillies's recent offensive form clearly outpaces Houston Astros's over the tracked windows.

Why the price is what it is

Team strength: 53.1%
Before any pitcher or bullpen adjustment, Leo's team-strength model alone makes Philadelphia Phillies 53.1% to win. Everything below moves the price from this starting point.
Pitcher score gap: 11 points
The pitcher-score gap favors Philadelphia Phillies by 11 points. This is the biggest single mover of the price -- a large gap moves it a lot, a small gap barely moves it.
Bullpen adjustment: +0.009
The bullpen-fatigue gap between the two pens nudges the price toward Philadelphia Phillies. This moves the price less than the starting pitchers do, since a starter covers more of the game than the bullpen.
Net effect: 53.1% -> 67.8%
Team strength alone had Philadelphia Phillies at 53.1%. After the pitcher and bullpen terms, the price is 67.8% -- the same number shown as Model Lean above.
The verdict Leo backs Philadelphia Phillies at -172. 67.8% to win against a market implying 60.8% - the model sees value and the setup clears every gate.
Read the full model output

Philadelphia Phillies is an official moneyline pick because it clears both gates: 67.8% model win probability and 7.4/10 Lab Rating. Leo projects 67.8% against a 60.8% no-vig market number, a 7.0% model edge at -172. Philadelphia Phillies owns the starting pitcher edge by 11 points. Bullpen read: Neutral. Philadelphia Phillies's pen efficiency: Below average (3.9/10). Lineup check: Philadelphia Phillies is a touch below its season form (-0.041 OPS); Houston Astros is a touch below its season form (-0.032 OPS).

Final result

Astros 7, Phillies 11

How the analysis held up

Philadelphia Phillies won, the side Leo's model favored.

Cristopher Sánchez (Philadelphia Phillies) was Leo's favored starter by pitcher score, but Hunter Brown actually pitched better tonight: 5.0 IP, 4 ER (7.20 ERA) against 6.0 IP, 6 ER (9.00 ERA). The edge did not show up in this game. Both starters struggled; this was not a case of one clean outing beating one bad one.

The Houston Astros bullpen was not flagged pregame, but it had a night worth noting: 5 earned runs allowed over 3.0 relief innings (15.00 ERA) — quietly worse than the pregame read implied. Note: 2 of the runs charged to the Houston Astros pitching staff overall were unearned — not something the bullpen's stuff should be blamed for.

Houston Astros scored 7, 5 more than the 2 pregame projection.

Philadelphia Phillies scored 11, 7 more than the 4 pregame projection.

Game information

MatchupHouston Astros at Philadelphia Phillies
DateWednesday, September 9, 2026
First pitch6:40 PM ET
VenueCitizens Bank Park
Starting pitchersHunter Brown vs Cristopher Sánchez
WeatherGame-time forecast: 81°F, 0% precipitation chance, 8 mph wind from S.

Starting pitcher matchup

Full Pitcher Matchup Tool →
Hunter BrownAstros · RHP
vs
Cristopher SánchezPhillies · LHP
MetricAstrosPhillies
Pitching planTraditional starterTraditional starter
Expected innings5⅓6⅓
ThrowsRL
Leo pitcher score (higher is better)6676
ERA (lower is better)3.522.79
WHIP (lower is better)1.301.21
K/9 (higher is better)9.810.1
K-BB% (higher is better)14.0%21.6%
K% (higher is better)25.9%27.0%
BB% (lower is better)11.9%5.4%
BB/9 (lower is better)4.52.0
HR/9 (lower is better)1.10.8
Ground-ball rate61.1%65.4%
Fly-ball rate38.9%34.6%

Pitcher edge: Leo gives Cristopher Sánchez a 10-point edge over Hunter Brown, driven mainly by BB/9 (2.0 vs 4.5) and K-BB% (21.6% vs 14.0%).

How to read this: the scorecards above name the starters; every number lives in this table.

Strikeout Projections Full strikeout projections →

Hunter Brown strikeouts
4.6 Leo projected Ks
No K play · +0.1K difference is below Leo's 0.7K threshold
Market 4.5K · O -132 / U +111 · 6 books

Same data source as the Pitcher Matchup Tool, where every starter on the slate is compared side by side.

Both sides arrive in similar form. Astros are 6-4 in their last 10 and averaging 4.1 runs per game over the last 15 days; Phillies are 6-4 in their last 10 and averaging 3.5 runs per game over the last 15 days. On the season Phillies carry the better run differential per game (+0.26 against -0.28).

MetricAstrosPhillies
Last 106-46-4
Last 10 by venue (away team on the road, home team at home)6-4 on the road7-3 at home
OPS, last 15 days0.6910.671
wOBA, last 15 days (hot/cold read)0.3040.298
Runs per game, last 15 days4.13.5
K% last 15 days (lower is better)22.1%20.8%

Last 15 days only. Hot and cold streaks for all 30 teams live on the Stats page.

30-day offense

Full offense tool →
Last 30 daysAstrosPhillies
OPS0.677 (-0.048 vs szn)0.736 (+0.023 vs szn)
Runs per game4.07 (-0.446 vs szn)4.81 (+0.308 vs szn)
wOBA (model offense input)0.296 (-0.022 vs szn)0.325 (+0.010 vs szn)
K% (lower is better)22.7% (+1.1% vs szn)18.4% (-3.7% vs szn)

Over the last 30 days the Phillies have been the better offense, 0.325 wOBA to 0.296. They are running hot against their own season line (+0.010 wOBA).

Season profile

Full Stats page →
MetricAstrosPhillies
Record74-7181-64
Run differential / game (team quality)-0.28+0.26
Runs scored / game (offense, season)4.524.51
Runs allowed / game (defense, season, lower better)4.804.25
Season OPS0.7230.712
K% season (lower is better)21.7%22.1%
OPS vs opposing hand (season)0.7030.712

Season-long team quality, not recent form. Run differential and run environment come from the season standings; splits for all 30 teams live on the Stats page, including the run environment table.

Every team on today's slate, on any two axes you pick. Astros and Phillies are highlighted.

Astros
Combined risk
5.3 Normal
Fatigue
6.1 Normal
Efficiency
6.7 Effective
Phillies
Combined risk
5.0 Normal
Fatigue
4.4 Normal
Efficiency
3.9 Below average

Risk is what the model actually uses: fatigue blended with how well the pen has pitched. High fatigue with high efficiency is a tired pen that is still getting outs.

MetricAstrosPhillies
Fatigue6.1/10, Normal4.4/10, Normal
Efficiency6.7/10, Effective3.9/10, Below average
Combined risk5.3/10, Normal5.0/10, Normal
Relief innings, last 7 days19.713.0
Back-to-back arms65
7-day ERA1.836.23
7-day WHIP1.121.23

Fatigue measures workload. Efficiency measures recent run prevention. Combined risk is what the moneyline and totals systems use.

Run total projection

Full Totals Projections →
Leo projection
5.9
Market total
8.5
Projected away runs
2.1
Projected home runs
4.0
Over price
-109
Under price
-108
Houston Astros team total
2.1 projected
Line Not available · O Not available / U Not available
Market line pending
Philadelphia Phillies team total
4.0 projected
Line Not available · O Not available / U Not available
Market line pending

The model projects 2.6 runs below the market total. A research lean still requires a setup rating of at least 7.0/10. Team totals remain research-only until their graded sample is established.

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