Miami Marlins @ Houston Astros
MMAwayMiami Marlins55%
@HAHomeHouston Astros45%
Model PickMiami Marlins 55%Market edge — disclosed after closing odds are collectedEvidence 12 structured · 2 qualitative
AI Summary grounded in real data · zero hallucination
Our model projects the Miami Marlins with a 55% win probability, primarily driven by their advantage in the Starting Pitcher Matchup and Last 10 Games Form. The Marlins show a positive delta of 3.2%p in the Starting Pitcher Matchup and 2.5%p in Last 10 Games Form. However, significant disadvantages in Team ERA and Team WHIP present a key swing risk. The edge against the market is currently uncalculated.
Logistic-regression statistical model — predicts Miami Marlins vs Houston Astros 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 45% home win was derived
Home Advantage+2.5
Pythagorean Expectation-2.4
Season Win%-0.6
Last 10 Games Form+2.5
Home/Away Split+0.9
Team OBP-1.8
Team SLG+0.3
Team ERA-6.1
Team WHIP-3.7
Starting Pitcher Matchup+3.2
Baseline 50% → final home win44.8%
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 | Houston Astros at home — MLB historical home win rate ~.535 (ballpark familiarity, no travel) | MLB StatsAPI |
| Pythagorean Expectation | Home 45.5% (468 RS/516 RA) vs Away 51.4% (455/441) — strength from runs scored/allowed | MLB StatsAPI |
| Season Win% | Home 49-54 (.476) vs Away 52-50 (.510) | MLB StatsAPI |
| Last 10 Games Form | Home 4-6 vs Away 2-8 · Home W2 | MLB StatsAPI |
| Home/Away Split | Home team home 25-27 · away team away 21-30 | MLB StatsAPI |
| Team OBP | Home .315 vs Away .327 — foundation of scoring | MLB StatsAPI |
| Team SLG | Home .412 vs Away .408 (OPS .727/.735) | MLB StatsAPI |
| Team ERA | Home 4.74 vs Away 4.04 — lower is better | MLB StatsAPI |
| Team WHIP | Home 1.40 vs Away 1.25 — baserunners allowed per inning (lower is better) | MLB StatsAPI |
| Starting Pitcher Matchup | Home Peter Lambert (ERA 3.03) vs Away Sandy Alcantara (ERA 3.89) | MLB StatsAPI |
| Hitting Detail (BABIP, K, BB) | Home BABIP .277 · K 836 · BB 340 / Away BABIP .301 · K 837 · BB 344 (BABIP is luck-driven → not factored into probability) | MLB StatsAPI |
| Pitching Detail (K/BB, HR9) | Home K/BB 2.02 · HR9 1.40 / Away K/BB 2.47 · HR9 1.02 | MLB StatsAPI |
Qualitative & folklore factors 2 factors · fully disclosed
Qualitative · Marlins' Losing Streak
The Miami Marlins are currently on an 8-game losing streak, which could negatively impact team morale. The pressure to break the streak might affect player performance.
Basis: LLM · news · Marlins' losing streak to 8
Qualitative · Astros' Hot Bats
The Houston Astros' offense is on a roll, showcasing power hitting with Jeremy Peña's grand slam and Yordan Alvarez's two homers in recent games.
Basis: LLM · news · Jeremy Peña's grand slam, Yordan Alvarez's 2 homer
12 source headlines (auto-collected · basis disclosed)
- Miami Marlins at Houston Astros Game Story, Scores/Highlights - 07/20/2026
- Miami Marlins vs Houston Astros Live Stream: How to Watch MLB
- How to watch Marlins vs. Astros: TV channel and streaming options for July 21
- Jeremy Peña's grand slam, Yordan Alvarez's 2 homers power Astros past Marlins
- Astros vs. Miami Series Primer with Marlins Voice Jack McMullen
- Marlins vs. Astros Prediction, Odds, Probable Pitchers, Prop Bets for Tuesday, July 21
- Where to watch Miami Marlins vs Houston Astros: TV channel, start time, streaming for July 21
- Miami Marlins at Houston Astros Game Story, Scores/Highlights - 07/21/2026
Frequently asked questions This game's prediction summary
Miami Marlins vs Houston Astros — who's more likely to win?
SealedSlate's logistic-regression statistical model gives Miami Marlins a 55% chance to win (Home 45% · Away 55%). MLB · 2026-07-23 09:10 KST.
How was the 44.8% 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 44.8%. 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.