Predictions / Football / France. National 1 / Bastia vs Versailles

Prediction Audit: Bastia vs Versailles Prediction, Odds & AI Betting Tips

Aug 20, 2026 - 18:45
2 1.26
3 1.34
xG Accuracy: 52%

AI correctly predicted the Versailles win.

The match finished 2–3, 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 (5 goals) ✖ Incorrect
  • Both Teams To Score BTTS Yes Yes ✔ Correct
  • 1X2 Versailles Versailles ✔ Correct
  • Correct Score Insights 1-1, 0-1, 1-0, 1-2, 2-1 2-3 ✖ Incorrect

Model vs Closing Market

Moderate Disagreement

The closing market prices Bastia higher than the statistical model.

Largest probability gap: Bastia -6.4 pp

Outcome Model Closing Market Difference Signal
Bastia 33.3% 39.7% -6.4 pp Market Higher
Draw 29.6% 29.5% +0.1 pp Aligned
Versailles 37.1% 30.8% +6.3 pp Model Higher

The closing market estimates Bastia's win probability at 39.7%, compared with the model's estimate of 33.3%, a difference of 6.4 percentage points. This highlights a disagreement between the model and market consensus, without 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 model's directional lean matched the result (Versailles win 2–3).

Market Assessment

The market and model broadly agree on Bastia. The remaining divergence may reflect differences in team-strength assumptions rather than a directional disagreement.

  • Monitor line movement before kickoff — not a betting recommendation.

Post Match Insights

What worked

  • Expected goals projected a high-scoring match (ΣxG 2.60) — 5 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 (5 goals)
  • Exact score: outside the model's top score bins

Market lesson

Large model–market gaps do not automatically mean the market is right. Here the closing market priced Versailles higher (43.5% vs model 37.1%, 6.4 pp), but the model's lean was validated (Versailles win 2–3).

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Prediction Timeline

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

  1. Aug 20, 2026 · 18:44 UTC Forecast generated
    • Model 1X2 · Bastia 33.4% · Draw 29.6% · Versailles 37.0%
    • xG · Bastia 1.26 — Versailles 1.34
  2. Aug 20, 2026 · 18:14 UTC Opening odds snapshot PRE30
    • 1X2 odds · Bastia 2.40 · Draw 3.23 · Versailles 3.10
    • Implied 1X2 · Bastia 39.7% · Draw 29.5% · Versailles 30.8%
    • Bookmaker · Pinnacle
  3. Aug 20, 2026 · 18:44 UTC Closing snapshot recorded PRE1
    • 1X2 odds · Bastia 2.40 · Draw 3.23 · Versailles 3.10
    • Implied 1X2 · Bastia 39.7% · Draw 29.5% · Versailles 30.8%
    • Bookmaker · Pinnacle
  4. Aug 20, 2026 · 18:45 UTC Kickoff
  5. FT Full-time result Versailles win · 2–3
  6. FT Prediction validated Directional lean matched 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 Validated
Pre-match metrics (historical context)
Prediction Reliability 76/100 · High
  • Validation: Pass
Evidence ★★★★★
  • No strong statistical edge
  • Direction agrees with model lean
  • Validation passed
Pricing proximity (inverse gap) 23/100
Monitoring Confidence 34/100

Validation Report

Immutable Snapshot

Prediction Time: Aug 14, 2026 · 07:29 UTC Snapshot ID: dp-3923293

Closing Odds 2.4
AI Fair Odds —
CLV Pending
Final Result Versailles win · Bastia 2–3 Versailles
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: National 1
  • Fixture: Bastia vs Versailles
  • Kickoff: 2026-08-20 18:45:00
  • 1X2 (model): Home 33.4% · Draw 29.6% · Away 37.0%
  • xG (showing): Bastia 1.26 — Versailles 1.34 (total xG ≈ 2.6)
  • Value headline: None (actionable) — best tracked EV is about +0.7%, 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 (12.5%)

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.

Most likely correct score stays a low-probability tail: use it for context, not as a must-bet story.

Historical Recommendation

Historical Decision: Monitor

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

September 28, 2026 (UTC)

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Back to Predictions
National 1 National 1 — Standings
# TEAM MP W D L PTS
1 Rouen 8 5 2 1 17
2 Caen 8 5 0 3 15
3 La Roche VF 7 4 3 0 15
4 Concarneau 7 3 3 1 12
5 Thionville Lusitanos 7 3 3 1 12
6 Amiens 7 3 2 2 11
7 Cannes 7 2 5 0 11
8 Versailles 7 3 1 3 10
9 Le Puy Foot 7 3 1 3 10
10 Bastia 7 3 1 3 10
11 Gobelins 7 2 3 2 9
12 Quevilly 7 2 3 2 9
13 Fleury 91 7 2 3 2 9
14 Orleans 7 2 1 4 7
15 Valenciennes 7 1 2 4 5
16 Aubagne 7 1 1 5 4
17 Bourg-en-bresse 01 7 1 1 5 4
18 Villefranche 7 1 1 5 4
# TEAM MP GS GC +/- PTS
1 Rouen 8 15 5 +10 17
2 Caen 8 15 9 +6 15
3 Thionville Lusitanos 7 13 11 +2 12
4 Fleury 91 7 11 8 +3 9
5 La Roche VF 7 10 6 +4 15
6 Versailles 7 10 11 -1 10
7 Concarneau 7 9 6 +3 12
8 Le Puy Foot 7 9 7 +2 10
9 Amiens 7 8 2 +6 11
10 Cannes 7 8 3 +5 11
11 Valenciennes 7 7 12 -5 5
12 Quevilly 7 6 8 -2 9
13 Bastia 7 6 9 -3 10
14 Orleans 7 6 10 -4 7
15 Villefranche 7 6 17 -11 4
16 Gobelins 7 5 7 -2 9
17 Bourg-en-bresse 01 7 4 12 -8 4
18 Aubagne 7 3 8 -5 4