Predictions / Football / Brazil. Carioca U20 / Sampaio Correa FE U20 vs Boavista U20

Prediction Audit: Sampaio Correa FE U20 vs Boavista U20 Prediction, Odds & AI Betting Tips

Sampaio Correa FE U20 Sampaio Correa FE U20
Sep 27, 2026 - 18:00
3 1.34
1 1.26
xG Accuracy: 59%
Boavista U20 Boavista U20

AI correctly predicted the Sampaio Correa FE U20 win.

The match finished 3–1, validating the model's directional assessment.

Tracked markets vs full-time result

Prediction grade B-

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

  • Market Prediction Result Outcome
  • Over / Under 2.5 Under 2.5 Over 2.5 (4 goals) ✖ Incorrect
  • Both Teams To Score BTTS Yes Yes ✔ Correct
  • 1X2 Sampaio Correa FE U20 Sampaio Correa FE U20 ✔ Correct
  • Correct Score Insights 1-1, 1-0, 0-1, 2-1, 1-2 3-1 ✖ Incorrect

Post Match Insights

What worked

  • Expected goals projected a high-scoring match (ΣxG 2.60) — 4 goals materialised
  • Both Teams To Score (Yes) matched the full-time result

What failed

  • Over / Under 2.5: model leaned Under 2.5; match finished Over 2.5 (4 goals)
  • Exact score: outside the model's top score bins

Market lesson

The model's directional lean matched the full-time result (Sampaio Correa FE U20 win 3–1).

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Prediction Timeline

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

  1. Sep 21, 2026 · 02:16 UTC Forecast generated
    • xG · Sampaio Correa FE U20 1.34 — Boavista U20 1.26
  2. Sep 27, 2026 · 18:00 UTC Kickoff
  3. FT Full-time result Sampaio Correa FE U20 win · 3–1
  4. FT Prediction validated Directional lean matched full-time result
  5. 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 Validated
Pre-match metrics (historical context)
Prediction Reliability 57/100 · Moderate
  • Validation: Pending
Evidence ★★★★★
  • No strong statistical edge
  • Market has already priced much of the edge
  • Validation pending
Market Compatibility 100/100
Betting Confidence 59/100

Validation Report

Immutable Snapshot

Prediction Time: Sep 21, 2026 · 02:16 UTC Snapshot ID: dp-10108888

Closing Odds Pending
AI Fair Odds —
CLV Pending
Final Result Sampaio Correa FE U20 win · Sampaio Correa FE U20 3–1 Boavista U20
Prediction ✔ Correct
Decision Grade B-

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

Pre-match snapshot for this fixture.

  • League: Carioca U20
  • Fixture: Sampaio Correa FE U20 vs Boavista U20
  • Kickoff: 2026-09-27 18:00:00
  • 1X2 (model): Home 37.0% · Draw 29.6% · Away 33.4%
  • xG (showing): Sampaio Correa FE U20 1.34 — Boavista U20 1.26 (total xG ≈ 2.6)
  • Value headline: None — no positive EV could be estimated on tracked lines at current best prices (missing odds or thin book depth).
  • 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 (12.5%)

The decision block shows no default Primary: Primary needs consensus EV ≥ +5.0% plus strength/reliability/calibration gates. A separate Lean/tracked gate is +2.0% (selective only). Lean labels are directional only — not bankroll-sized recommendations.

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: Validated — Pre-match lean validated against 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

October 01, 2026 (UTC)

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Carioca U20 Carioca U20 — Standings
# TEAM MP W D L PTS
1 Fluminense U20 8 7 1 0 22
2 Flamengo U20 8 7 0 1 21
3 Vasco da Gama U20 7 6 0 1 18
4 Sampaio Correa FE U20 7 3 2 2 11
5 Botafogo U20 7 2 2 3 8
6 Boavista U20 7 2 2 3 8
7 Madureira U20 6 1 4 1 7
8 Bangu U20 7 2 1 4 7
9 Maricá U20 7 1 2 4 5
10 Nova Iguaçu U20 7 1 2 4 5
11 Portuguesa RJ U20 8 1 2 5 5
12 Volta Redonda U20 7 0 2 5 2
# TEAM MP GS GC +/- PTS
1 Fluminense U20 8 22 6 +16 22
2 Flamengo U20 8 22 8 +14 21
3 Vasco da Gama U20 7 15 5 +10 18
4 Botafogo U20 7 10 10 0 8
5 Maricá U20 7 9 11 -2 5
6 Boavista U20 7 9 12 -3 8
7 Sampaio Correa FE U20 7 9 13 -4 11
8 Madureira U20 6 7 9 -2 7
9 Nova Iguaçu U20 7 7 14 -7 5
10 Bangu U20 7 6 10 -4 7
11 Portuguesa RJ U20 8 4 11 -7 5
12 Volta Redonda U20 7 4 15 -11 2
Carioca U20 Brazil. Carioca U20 Predictions