Houston Astros @ Seattle Mariners
HAAwayHouston Astros47%
@SMHomeSeattle Mariners53%
Model PickSeattle Mariners 53%Market edge — disclosed after closing odds are collectedEvidence 12 structured · 3 qualitative
The model favors Seattle Mariners at 53% — a slight edge. The main drivers are Home Advantage, Team ERA, offset by Team SLG.
Logistic-regression statistical model — predicts Houston Astros vs Seattle Mariners 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 53% home win was derived
Home Advantage+2.5
Pythagorean Expectation-0.4
Season Win%-0.6
Last 10 Games Form+1.2
Home/Away Split+0.2
Team OBP-0.3
Team SLG-2.4
Team ERA+2.5
Team WHIP+2
Starting Pitcher Matchup-1.8
Baseline 50% → final home win53%
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 | Seattle Mariners at home — MLB historical home win rate ~.535 (ballpark familiarity, no travel) | MLB StatsAPI |
| Pythagorean Expectation | Home 45.7% (634 RS/697 RA) vs Away 46.7% (695/747) — strength from runs scored/allowed | MLB StatsAPI |
| Season Win% | Home 73-84 (.465) vs Away 78-79 (.497) | MLB StatsAPI |
| Last 10 Games Form | Home 4-6 vs Away 3-7 · Home L1 | MLB StatsAPI |
| Home/Away Split | Home team home 40-36 · away team away 39-37 | MLB StatsAPI |
| Team OBP | Home .312 vs Away .314 — foundation of scoring | MLB StatsAPI |
| Team SLG | Home .379 vs Away .411 (OPS .691/.725) | MLB StatsAPI |
| Team ERA | Home 4.21 vs Away 4.50 — lower is better | MLB StatsAPI |
| Team WHIP | Home 1.26 vs Away 1.34 — baserunners allowed per inning (lower is better) | MLB StatsAPI |
| Starting Pitcher Matchup | Home George Kirby (ERA 4.24) vs Away Ethan Pecko (ERA 3.77) | MLB StatsAPI |
| Hitting Detail (BABIP, K, BB) | Home BABIP .277 · K 1361 · BB 531 / Away BABIP .277 · K 1290 · BB 507 (BABIP is luck-driven → not factored into probability) | MLB StatsAPI |
| Pitching Detail (K/BB, HR9) | Home K/BB 3.18 · HR9 1.24 / Away K/BB 2.17 · HR9 1.30 | MLB StatsAPI |
Qualitative & folklore factors 3 factors · fully disclosed
Qualitative · Division Race Heating Up
The Houston Astros' 7-0 victory over the Seattle Mariners has propelled them into a tie with the Texas Rangers for the AL West lead. This upcoming game is crucial for the division title.
Basis: LLM · news · Astros regain control of AL West race with 7-0 win
Qualitative · Mariners' Disappointing Streak
The Seattle Mariners suffered a 7-0 shutout loss to the Houston Astros, their 15th of the season, which has been a source of significant disappointment for fans and could impact team morale.
Basis: LLM · news · MARINERS POSTCAST: Seattle Mariners KEEP FINDING W
Qualitative · Astros' Batting Power
The Houston Astros' offense exploded in the previous game, hitting three home runs and scoring seven runs. Yordan Alvarez was a key contributor, hitting his 41st homer and driving in three runs.
Basis: LLM · news · Houston Astros club three home runs as Seattle Mar
12 source headlines (auto-collected · basis disclosed)
- Houston Astros at Seattle Mariners Game Story, Scores/Highlights - 09/22/2026
- Astros vs. Mariners (Sep 22, 2026) Live Score
- How to Watch Astros Must-Win Series vs Mariners: TV, Radio, Probables
- Astros regain control of AL West race with 7-0 win over Mariners
- Houston Astros at Seattle Mariners - Where to Watch, Stream Info, TV Channel, and Live Updates (September 22, 2026)
- How to watch Astros vs. Mariners: TV channel and streaming options for September 22
- Chaos Makers: Mariners vs. Astros Series Preview
- Houston Astros vs. Seattle Mariners: Game Highlights
Frequently asked questions This game's prediction summary
Houston Astros vs Seattle Mariners — who's more likely to win?
SealedSlate's logistic-regression statistical model gives Seattle Mariners a 53% chance to win (Home 53% · Away 47%). MLB · 2026-09-24 11:10 KST.
How was the 53% 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 53%. 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.