Predictions / Football / World. CONCACAF Central American Cup / LD Alajuelense vs CD Marathon

Prediction Audit: LD Alajuelense vs CD Marathon Prediction, Odds & AI Betting Tips

LD Alajuelense LD Alajuelense
Sep 18, 2026 - 00:30
3 1.38
1 1.22
xG Accuracy: 60%
CD Marathon CD Marathon

AI correctly predicted the LD Alajuelense win.

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

Tracked markets vs full-time result

Prediction grade A

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

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

Model vs Closing Market

Moderate Disagreement

The model rates CD Marathon considerably stronger than the closing betting market.

Largest probability gap: CD Marathon +8.7 pp

Outcome Model Closing Market Difference Signal
LD Alajuelense 39.0% 44.4% -5.4 pp Market Higher
Draw 29.5% 32.9% -3.4 pp Aligned
CD Marathon 31.5% 22.7% +8.7 pp Model Higher

The statistical model estimates CD Marathon's win probability at 31.5%, compared with the closing market's implied probability of 22.7%, a difference of 8.7 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 model's directional lean matched the result (LD Alajuelense win 3–1).

Market Assessment

The fair estimate shows a modest edge over current market pricing on CD Marathon.

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

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
  • Over 2.5 goals aligned with the xG profile

What failed

  • 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 LD Alajuelense more conservatively (30.3% vs model 39.0%, 8.7 pp), but the model's lean was validated (LD Alajuelense win 3–1).

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Prediction Timeline

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

  1. Sep 18, 2026 · 00:29 UTC Forecast generated
    • Model 1X2 · LD Alajuelense 39.0% · Draw 29.5% · CD Marathon 31.5%
    • xG · LD Alajuelense 1.38 — CD Marathon 1.22
  2. Sep 17, 2026 · 23:59 UTC Opening odds snapshot PRE30
    • 1X2 odds · LD Alajuelense 2.04 · Draw 2.75 · CD Marathon 3.98
    • Implied 1X2 · LD Alajuelense 44.4% · Draw 32.9% · CD Marathon 22.7%
    • Bookmaker · Pinnacle
  3. Sep 18, 2026 · 00:29 UTC Closing snapshot recorded PRE1
    • 1X2 odds · LD Alajuelense 2.04 · Draw 2.75 · CD Marathon 3.98
    • Implied 1X2 · LD Alajuelense 44.4% · Draw 32.9% · CD Marathon 22.7%
    • Bookmaker · Pinnacle
  4. Sep 18, 2026 · 00:30 UTC Kickoff
  5. FT Full-time result LD Alajuelense win · 3–1
  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: Observe
Historical Decision No Primary Bet
Outcome Validated
Pre-match metrics (historical context)
Prediction Reliability 75/100 · High
  • Validation: Pass
Evidence ★★★★★
  • Statistical edge detected
  • Direction agrees with model lean
  • Validation passed
Pricing proximity (inverse gap) 56/100
Betting Confidence 78/100

Validation Report

Immutable Snapshot

Prediction Time: Sep 12, 2026 · 00:54 UTC Snapshot ID: dp-8192029

Closing Odds 3.98
AI Fair Odds —
CLV Pending
Final Result LD Alajuelense win · LD Alajuelense 3–1 CD Marathon
Prediction ✔ Correct
Decision Grade A

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: CONCACAF Central American Cup
  • Fixture: LD Alajuelense vs CD Marathon
  • Kickoff: 2026-09-18 00:30:00
  • 1X2 (model): Home 39.0% · Draw 29.5% · Away 31.5%
  • xG (showing): LD Alajuelense 1.38 — CD Marathon 1.22 (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 Over 2.5; BTTS Yes
  • BTTS (model): Yes 54.4% · No 45.6%
  • Correct score (top bin): 1-1 (12.5%)

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.

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

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

September 28, 2026 (UTC)

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