Predictions / Football / Brazil. Copa Rio / Madureira vs Portuguesa RJ

Prediction Audit: Madureira vs Portuguesa RJ Prediction, Odds & AI Betting Tips

Madureira Madureira
Aug 12, 2026 - 17:45
1 1.22
1 1.38
xG Accuracy: 85%
Portuguesa RJ Portuguesa RJ

The model missed the final outcome (Draw 1–1).

The model had projected Portuguesa RJ at 39.0%, but the full-time result went the other way.

Tracked markets vs full-time result

Prediction grade C

Each row compares the pre-match model lean to the full-time result.

  • Market Prediction Result Outcome
  • Over / Under 2.5 Under 2.5 Under 2.5 (2 goals) ✔ Correct
  • Both Teams To Score BTTS Yes Yes ✔ Correct
  • 1X2 Portuguesa RJ Draw ✖ Incorrect
  • Correct Score Insights 1-1, 0-1, 1-0, 1-2, 2-1 1-1 ✔ Correct

Model vs Closing Market

Broadly Aligned

The model and closing market are broadly aligned.

Largest probability gap: Madureira +3.7 pp

Outcome Model Closing Market Difference Signal
Madureira 31.5% 27.8% +3.7 pp Aligned
Draw 29.5% 31.2% -1.7 pp Aligned
Portuguesa RJ 39.0% 41.0% -2.0 pp Aligned

The model and closing market are broadly aligned, with probability differences below 5 percentage points.

Model probabilities are generated from the statistical xG model using a Poisson distribution. Closing market probabilities are derived from consensus closing 1X2 odds after margin removal. Values represent implied probabilities rather than betting recommendations. Closing snapshot: PRE1.

After full time, the result was Draw 1–1.

Market Assessment

The market and model are broadly aligned. Any small pricing gap likely reflects rounding or bookmaker margin, not a structural disagreement.

  • Current pricing remains close to the model baseline.

Post Match Insights

What worked

  • Both Teams To Score (Yes) matched the full-time result
  • Under 2.5 goals aligned with the xG profile
  • Exact score 1–1 fell within the model's highlighted bins

What failed

  • 1X2: model leaned Portuguesa RJ; match finished Draw

Market lesson

The full-time result was Draw 1–1, which did not match the model's pre-match lean on 1X2.

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Prediction Timeline

How this prediction moved from forecast to full-time review.

  1. Aug 12, 2026 · 17:44 UTC Forecast generated
    • Model 1X2 · Madureira 31.5% · Draw 29.5% · Portuguesa RJ 39.0%
    • xG · Madureira 1.22 — Portuguesa RJ 1.38
  2. Aug 12, 2026 · 17:14 UTC Opening odds snapshot PRE30
    • 1X2 odds · Madureira 3.20 · Draw 2.85 · Portuguesa RJ 2.17
    • Implied 1X2 · Madureira 27.8% · Draw 31.2% · Portuguesa RJ 41.0%
    • Bookmaker · Pinnacle
  3. Aug 12, 2026 · 17:44 UTC Closing snapshot recorded PRE1
    • 1X2 odds · Madureira 3.20 · Draw 2.85 · Portuguesa RJ 2.17
    • Implied 1X2 · Madureira 27.8% · Draw 31.2% · Portuguesa RJ 41.0%
    • Bookmaker · Pinnacle
  4. Aug 12, 2026 · 17:45 UTC Kickoff
  5. FT Full-time result Draw · 1–1
  6. FT Prediction missed 1X2 lean did not match full-time result
  7. Archived Prediction review

Historical Snapshot

Frozen at kickoff — the model output as it stood before the match started.

Historical verdict: Observe
Historical Decision No Primary Bet
Outcome Missed
Pre-match metrics (historical context)
Prediction Reliability 77/100 · High
  • Validation: Pass
Evidence ★★★★★
  • No strong statistical edge
  • Direction agrees with model lean
  • Validation passed
Market Compatibility 81/100
Betting Confidence 80/100

Validation Report

Immutable Snapshot

Prediction Time: Aug 06, 2026 · 01:27 UTC Snapshot ID: dp-3094347

Closing Odds 3.2
AI Fair Odds —
CLV Pending
Final Result Draw · Madureira 1–1 Portuguesa RJ
Prediction ✖ Missed
Decision Grade C

Model Performance

This prediction contributes to:

  • Primary Bets ROI (180d): -100.0%

Review FAQ

How accurate was the prediction?
This page grades directional markets (1X2, Over/Under 2.5, BTTS) against the full-time result. The prediction grade reflects how many of those tracked markets matched reality.
What does xG Accuracy measure?
xG Accuracy compares the model's pre-match expected-goals profile to the actual scoreline — not whether every market hit. A strong directional review can coexist with a moderate xG accuracy score.
Why wasn't the exact score predicted?
Correct-score outcomes are low-probability tails even when the model reads the match profile well. We highlight top score bins for context; missing the exact line does not invalidate a directional review.
Does this improve the AI record?
Each finished match is logged in our validation pipeline. Aggregated hit rates and CLV studies are published separately — this page is the per-match audit trail.

Predictions are for informational purposes only. Always gamble responsibly and within your limits. Past performance does not guarantee future results.

AI match briefing

AI Match Summary

Quick read on how the model reads this matchup.

  • League: Copa Rio
  • Fixture: Madureira vs Portuguesa RJ
  • Kickoff: 2026-08-12 17:45:00
  • 1X2 (model): Home 31.5% · Draw 29.5% · Away 39.0%
  • xG (showing): Madureira 1.22 — Portuguesa RJ 1.38 (total xG ≈ 2.6)
  • Value headline: None — no positive EV on tracked lines at current best prices (same as the decision block: no default bet).
  • Structural leans (not bets): Structural lean (model): O/U 2.5 Under 2.5 (Under 2.5 51.8% · Over 2.5 48.2%); BTTS Yes (Yes 54.4% · No 45.6%) Value lean (pricing): O/U 2.5 Under 2.5; BTTS Yes
  • BTTS (model): Yes 54.4% · No 45.6%
  • Correct score (top bin): 1-1 (12.5%)

Saying “no value” on a snapshot is a feature, not a bug: it protects readers from forcing a play when the edge is not there.

If lines move materially, re-run generation or refresh — implied probabilities and any future EV readouts will change first.

Historical Recommendation

Historical Decision: No Primary Bet

Outcome: Missed — Pre-match 1X2 lean did not match the full-time result.

Risk Factors Considered Before Kickoff

  • Price movement: implied probabilities and EV move with odds.
  • Sample / data gaps: low-information leagues widen forecast bands.
  • In-play state: goals and red cards are not modelled here.
  • Scoreline variance: the most likely scoreline is still usually a low absolute probability outcome (often well below 20%).

Last Updated

September 25, 2026 (UTC)

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