Chicago Cubs @ St. Louis Cardinals
CCAwayChicago Cubs65%
@SLCHomeSt. Louis Cardinals35%
Model PickChicago Cubs 65%Market edge — disclosed after closing odds are collectedEvidence 12 structured · 3 qualitative
AI Summary grounded in real data · zero hallucination
Our model projects the Chicago Cubs with a 65% win probability, indicating a significant advantage over the St. Louis Cardinals. This projection is primarily driven by the Cubs' superior 'Last 10 Games Form' and 'Team OBP' compared to the Cardinals. However, the market edge for this specific game is currently uncalculated.
Logistic-regression statistical model — predicts Chicago Cubs vs St. Louis Cardinals 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 35% home win was derived
Home Advantage+2.5
Pythagorean Expectation-3.5
Season Win%-1.1
Last 10 Games Form-3.7
Home/Away Split-1
Team OBP-3.6
Team SLG-2.5
Team WHIP-1.8
Starting Pitcher Matchup+0.3
Baseline 50% → final home win35.4%
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 | St. Louis Cardinals at home — MLB historical home win rate ~.535 (ballpark familiarity, no travel) | MLB StatsAPI |
| Pythagorean Expectation | Home 48.9% (474 RS/486 RA) vs Away 57.7% (560/473) — strength from runs scored/allowed | MLB StatsAPI |
| Season Win% | Home 54-54 (.500) vs Away 61-47 (.565) | MLB StatsAPI |
| Last 10 Games Form | Home 3-7 vs Away 6-4 · Home W1 | MLB StatsAPI |
| Home/Away Split | Home team home 28-31 · away team away 31-25 | MLB StatsAPI |
| Team OBP | Home .315 vs Away .340 — foundation of scoring | MLB StatsAPI |
| Team SLG | Home .379 vs Away .415 (OPS .694/.755) | MLB StatsAPI |
| Team ERA | Home 4.18 vs Away 4.18 — lower is better | MLB StatsAPI |
| Team WHIP | Home 1.34 vs Away 1.26 — baserunners allowed per inning (lower is better) | MLB StatsAPI |
| Starting Pitcher Matchup | Home Andre Pallante (ERA 3.77) vs Away Javier Assad (ERA 3.86) | MLB StatsAPI |
| Hitting Detail (BABIP, K, BB) | Home BABIP .278 · K 829 · BB 346 / Away BABIP .294 · K 931 · BB 469 (BABIP is luck-driven → not factored into probability) | MLB StatsAPI |
| Pitching Detail (K/BB, HR9) | Home K/BB 2.29 · HR9 1.00 / Away K/BB 2.56 · HR9 1.51 | MLB StatsAPI |
Qualitative & folklore factors 3 factors · fully disclosed
Qualitative · Cardinals' Revenge Game
The Cardinals have suffered humiliating back-to-back losses to the Cubs, including 10-2 and 7-3 blowouts. This game presents a strong motivational factor for them to seek revenge.
Basis: LLM · news · Cubs Score Early and Often Humiliating St. Louis C
Qualitative · Cubs' Momentum
The Cubs are riding high after dominant 10-2 and 7-3 victories against the Cardinals. They'll be highly motivated to maintain this winning momentum.
Basis: LLM · news · Cubs Score Early and Often Humiliating St. Louis C
Qualitative · Cardinals' Walk-Off Win
The Cardinals recently secured a dramatic walk-off victory against the Cubs in extra innings, thanks to Iván Herrera's double. This could provide a significant morale boost for the team.
Basis: LLM · news · Iván Herrera Hits Dramatic Walk-Off Double as Card
12 source headlines (auto-collected · basis disclosed)
- Chicago Cubs at St. Louis Cardinals Game Story, Scores/Highlights - 07/29/2026
- Cubs Score Early and Often Humiliating St. Louis Cardinals Tuesday
- Cubs 7-3 Cardinals (Jul 27, 2026) Game Recap
- Chicago Cubs at St. Louis Cardinals Game Story, Scores/Highlights - 07/28/2026
- Chicago Cubs at St. Louis Cardinals Game Story, Scores/Highlights - 07/27/2026
- Chicago Cubs at St. Louis Cardinals Preview - 07/27/2026
- Chicago Cubs at St. Louis Cardinals Preview - 07/28/2026
- Iván Herrera Hits Dramatic Walk-Off Double as Cardinals Defeat Cubs in Extras
Frequently asked questions This game's prediction summary
Chicago Cubs vs St. Louis Cardinals — who's more likely to win?
SealedSlate's logistic-regression statistical model gives Chicago Cubs a 65% chance to win (Home 35% · Away 65%). MLB · 2026-07-31 03:15 KST.
How was the 35.4% 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 35.4%. 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.