Houston Astros @ Philadelphia Phillies
HAAwayHouston Astros46%
@PPHomePhiladelphia Phillies54%
Model PickPhiladelphia Phillies 54%Market edge — disclosed after closing odds are collectedEvidence 12 structured · 4 qualitative
AI Summary grounded in real data · zero hallucination
Our model projects the Philadelphia Phillies with a 54% win probability, giving them an edge over the Houston Astros (46%). This forecast is primarily driven by the Phillies' superior 'Team ERA' and 'Home Advantage,' though the 'Starting Pitcher Matchup' heavily favors the Astros, posing a significant risk to this pick. The market edge for this game is currently uncalculated.
Logistic-regression statistical model — predicts Houston Astros vs Philadelphia Phillies by accumulating the log-odds contributions of 12 proven structured metrics. Only structured metrics enter the probability; qualitative and folklore factors get a label only. Predictions are sealed with SHA-256 before the game.
Model factor contribution How the 54% home win was derived
Home Advantage+2.5
Pythagorean Expectation+2.1
Season Win%+1
Last 10 Games Form+1.2
Home/Away Split+0.4
Team OBP-0.4
Team SLG-0.5
Team ERA+4.7
Team WHIP+1.9
Starting Pitcher Matchup-8.6
Baseline 50% → final home win54.2%
Each factor's log-odds contribution accumulated · only structured metrics reflected (qualitative/folklore excluded) · each %p converts log-odds to probability, so it's non-linear — a simple sum may not exactly equal (final − baseline)
Structured metric analysis 12 metrics · fully disclosed
| Metric | Analysis (home vs away) | Source |
|---|---|---|
| Home Advantage | Philadelphia Phillies at home — MLB historical home win rate ~.535 (ballpark familiarity, no travel) | MLB StatsAPI |
| Pythagorean Expectation | Home 52.6% (642 RS/607 RA) vs Away 47.4% (647/685) — strength from runs scored/allowed | MLB StatsAPI |
| Season Win% | Home 81-63 (.563) vs Away 73-71 (.507) | MLB StatsAPI |
| Last 10 Games Form | Home 7-3 vs Away 6-4 · Home W1 | MLB StatsAPI |
| Home/Away Split | Home team home 40-32 · away team away 36-33 | MLB StatsAPI |
| Team OBP | Home .312 vs Away .315 — foundation of scoring | MLB StatsAPI |
| Team SLG | Home .400 vs Away .407 (OPS .712/.722) | MLB StatsAPI |
| Team ERA | Home 3.96 vs Away 4.51 — lower is better | MLB StatsAPI |
| Team WHIP | Home 1.27 vs Away 1.35 — baserunners allowed per inning (lower is better) | MLB StatsAPI |
| Starting Pitcher Matchup | Home Andrew Painter (ERA 5.55) vs Away Hayden Wesneski (ERA 3.18) | MLB StatsAPI |
| Hitting Detail (BABIP, K, BB) | Home BABIP .284 · K 1193 · BB 459 / Away BABIP .278 · K 1180 · BB 474 (BABIP is luck-driven → not factored into probability) | MLB StatsAPI |
| Pitching Detail (K/BB, HR9) | Home K/BB 3.27 · HR9 1.18 / Away K/BB 2.14 · HR9 1.29 | MLB StatsAPI |
Qualitative & folklore factors 4 factors · fully disclosed
Qualitative · Phillies' Magic Number Shrinks
The Phillies have seen their magic number shrink heading into the Astros series, bringing them closer to a playoff berth. This could significantly boost team morale and motivation.
Basis: LLM · news · Phillies Magic Number Improved Heading Into Astros
Qualitative · Phillies' Tough Schedule
The Phillies are noted for having a tough remaining strength of schedule among 2026 MLB playoff contenders. This could impact player focus and game management.
Basis: LLM · news · 2026 MLB playoff contenders: Remaining strength of
Qualitative · Astros/Phillies Injured List
Both the Astros and Phillies have players on the injured list for this series. Key injuries can directly impact team strength and performance.
Basis: LLM · news · Astros vs. Phillies Series Injured List
Qualitative · Series Opener
The Phillies are hosting the Astros to begin a three-game series. The opening game of a series can often set the tone for the entire matchup.
Basis: LLM · news · Phillies host the Astros to begin 3-game series
12 source headlines (auto-collected · basis disclosed)
- Houston Astros at Philadelphia Phillies Preview - 09/08/2026
- Houston Astros vs. Philadelphia Phillies
- Houston Astros vs. Philadelphia Phillies - Live Score - September 08, 2026
- What channel are the Phillies on tonight? What channel are the Astros on?
- What channel are the Phillies on tonight? What channel are the Astros on?
- How to Watch Astros vs. Phillies: Streaming & TV on Sept. 8
- Phillies Magic Number Improved Heading Into Astros Series
- Philadelphia Phillies vs. Houston Astros Series Sept. 8-10: Odds, Starting Pitchers & Predictions
Frequently asked questions This game's prediction summary
Houston Astros vs Philadelphia Phillies — who's more likely to win?
SealedSlate's logistic-regression statistical model gives Philadelphia Phillies a 54% chance to win (Home 54% · Away 46%). MLB · 2026-09-09 07:40 KST.
How was the 54.2% home-win probability calculated?
Starting from a 50% baseline, we additively accumulate the log-odds contributions of 12 proven structured statistical metrics to reach the final 54.2%. Each factor's %p contribution is fully disclosed on the page; qualitative and folklore factors are not reflected in the probability.
Can this prediction be altered later?
No. Every prediction is sealed with a SHA-256 hash before the game starts and permanently recorded in the track record, making after-the-fact changes impossible. SealedSlate runs a transparent ledger that never inflates the hit rate and leaves missed predictions exactly as they were.
We don't compete on hit rate — every factor is fully disclosed and labeled. Only 📊 structured stats feed the probability (each factor's contribution shown in %p); ⚔️🔮 are context to weigh. Predictions are locked and sealed before the game — verify the hits directly on the track record.