Predictions / Football / Brazil. Copa Rio / Sampaio Corrêa RJ vs Resende

Prediction Audit: Sampaio Corrêa RJ vs Resende Prediction, Odds & AI Betting Tips

Jul 22, 2026 - 22:30
2 1.29
0 1.31
xG Accuracy: 57%

The model missed the final outcome (Sampaio Corrêa RJ win 2–0).

The model had projected Resende at 35.6%, but the full-time result went the other way.

Tracked markets vs full-time result

Prediction grade F

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 No ✖ Incorrect
  • 1X2 Resende Sampaio Corrêa RJ ✖ Incorrect
  • Correct Score Insights 1-1, 0-1, 1-0, 1-2, 2-1 2-0 ✖ Incorrect

Model vs Closing Market

Strong Disagreement

The model rates Resende considerably stronger than the closing betting market.

Largest probability gap: Resende +13.0 pp

Outcome Model Closing Market Difference Signal
Sampaio Corrêa RJ 34.7% 44.9% -10.2 pp Market Higher
Draw 29.6% 32.5% -2.8 pp Aligned
Resende 35.6% 22.6% +13.0 pp Model Edge

The statistical model estimates Resende's win probability at 35.6%, compared with the closing market's implied probability of 22.6%, a difference of 13.0 percentage points. This highlights a substantial disagreement between the model's assessment and the market consensus, rather than indicating which view is ultimately correct.

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 Sampaio Corrêa RJ win 2–0.

Market Assessment

The statistical fair estimate is materially higher than the market on Resende.

  • The model may see a slower-scoring or closer matchup than the market.
  • Monitor line movement before kickoff — not a betting recommendation.

Post Match Insights

What worked

  • Under 2.5 goals aligned with the xG profile

What failed

  • Both Teams To Score: model leaned BTTS Yes; match finished BTTS No
  • 1X2: model leaned Resende; match finished Sampaio Corrêa RJ

Market lesson

The closing market differed from the model on Resende by 13.0 percentage points (22.6% vs model 35.6%) — in this case the market view proved closer.

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Prediction Timeline

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

  1. Jul 22, 2026 · 22:29 UTC Forecast generated
    • Model 1X2 · Sampaio Corrêa RJ 34.7% · Draw 29.7% · Resende 35.6%
    • xG · Sampaio Corrêa RJ 1.29 — Resende 1.31
  2. Jul 22, 2026 · 22:00 UTC Opening odds snapshot PRE30
    • 1X2 odds · Sampaio Corrêa RJ 1.91 · Draw 2.88 · Resende 3.92
    • Implied 1X2 · Sampaio Corrêa RJ 46.5% · Draw 30.8% · Resende 22.7%
    • Bookmaker · Pinnacle
  3. Jul 22, 2026 · 22:29 UTC Closing snapshot recorded PRE1
    • 1X2 odds · Sampaio Corrêa RJ 1.98 · Draw 2.74 · Resende 3.93
    • Implied 1X2 · Sampaio Corrêa RJ 44.9% · Draw 32.5% · Resende 22.6%
    • Bookmaker · Pinnacle
  4. Jul 22, 2026 · 22:30 UTC Kickoff
  5. FT Full-time result Sampaio Corrêa RJ win · 2–0
  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: Monitor
Historical Decision Monitor
Outcome Missed
Pre-match metrics (historical context)
Prediction Reliability 56/100 · Moderate
  • Validation: Warning
  • Large market gap (13 pp)
Evidence ★★★★★
  • Statistical edge detected
  • Market has already priced much of the edge
  • Validation warning
Pricing proximity (inverse gap) 11/100
Monitoring Confidence 19/100

Validation Report

Immutable Snapshot

Prediction Time: Aug 05, 2026 · 01:19 UTC Snapshot ID: dp-3015090

Closing Odds 3.93
AI Fair Odds —
CLV Pending
Final Result Sampaio Corrêa RJ win · Sampaio Corrêa RJ 2–0 Resende
Prediction ✖ Missed
Decision Grade F

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: Sampaio Corrêa-RJ vs Resende
  • Kickoff: 2026-07-22 22:30:00
  • 1X2 (model): Home 34.7% · Draw 29.7% · Away 35.6%
  • xG (showing): Sampaio Corrêa-RJ 1.29 — Resende 1.31 (total xG ≈ 2.6)
  • Value headline: None (actionable) — best tracked EV is about +1.2%, still below the +2.0% minimum for a headline / default stake (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 54.5% · No 45.5%) Value lean (pricing): O/U 2.5 Under 2.5; BTTS Yes
  • BTTS (model): Yes 54.5% · No 45.5%
  • Correct score (top bin): 1-1 (12.6%)

When book depth is thin or odds are missing, EV may be unavailable even though the model still prefers one side on totals or BTTS — wait for cleaner prices or skip.

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

Historical Recommendation

Historical Decision: Monitor

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 28, 2026 (UTC)

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