Predictions / Football / Iceland. 1. Deild / Grotta vs Ægir

Prediction Audit: Grotta vs Ægir Prediction, Odds & AI Betting Tips

Grotta Grotta
Jul 18, 2026 - 14:00
6 1.28
1 1.32
xG Accuracy: 25%
Ægir Ægir

AI correctly predicted the Grotta win.

The match finished 6–1, 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 (7 goals) ✖ Incorrect
  • Both Teams To Score BTTS Yes Yes ✔ Correct
  • 1X2 Grotta Grotta ✔ Correct
  • Correct Score Insights 1-1, 0-1, 1-0, 1-2, 2-1 6-1 ✖ Incorrect

Model vs Closing Market

Strong Disagreement

The closing market prices Grotta higher than the statistical model.

Largest probability gap: Grotta -18.9 pp

Outcome Model Closing Market Difference Signal
Grotta 42.1% 61.0% -18.9 pp Market Higher
Draw 27.4% 19.4% +8.0 pp Model Higher
Ægir 30.6% 19.6% +10.9 pp Model Edge

The closing market estimates Grotta's win probability at 61.0%, compared with the model's estimate of 42.1%, a difference of 18.9 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: PRE10.

After full time, the model's directional lean matched the result (Grotta win 6–1).

Market Assessment

The market is materially more optimistic about Grotta than the current fair estimate.

  • Investors may be incorporating information not fully reflected in the baseline model.
  • Tournament-specific context can shift market pricing.

Post Match Insights

What worked

  • Expected goals projected a high-scoring match (ΣxG 2.60) — 7 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 (7 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 Grotta higher (61.0% vs model 42.1%, 18.9 pp), but the model's lean was validated (Grotta win 6–1).

Premium betting site stake: New users can use the promo code FHn2uDc1 to receive $100 cash.

Prediction Timeline

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

  1. Jul 18, 2026 · 20:20 UTC Forecast generated
    • Model 1X2 · Grotta 42.0% · Draw 27.3% · Ægir 30.6%
    • xG · Grotta 1.28 — Ægir 1.32
  2. Jul 18, 2026 · 13:33 UTC Opening odds snapshot PRE30
    • 1X2 odds · Grotta 1.52 · Draw 4.79 · Ægir 4.72
    • Implied 1X2 · Grotta 61.0% · Draw 19.4% · Ægir 19.6%
    • Bookmaker · Pinnacle
  3. Jul 18, 2026 · 13:52 UTC Closing snapshot recorded PRE10
    • 1X2 odds · Grotta 1.52 · Draw 4.79 · Ægir 4.72
    • Implied 1X2 · Grotta 61.0% · Draw 19.4% · Ægir 19.6%
    • Bookmaker · Pinnacle
  4. Jul 18, 2026 · 14:00 UTC Kickoff
  5. FT Full-time result Grotta win · 6–1
  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: Monitor
Historical Decision Monitor
Outcome Validated
Pre-match metrics (historical context)
Prediction Reliability 54/100 · Moderate
  • Validation: Warning
  • Large market gap (19 pp)
Evidence ★★★★★
  • No strong statistical edge
  • Pricing remains divergent
  • Validation warning
Pricing proximity (inverse gap) 5/100
Betting Confidence 43/100

Validation Report

Immutable Snapshot

Prediction Time: Jul 28, 2026 · 12:20 UTC Snapshot ID: dp-2187939

Closing Odds 1.52
AI Fair Odds —
CLV Pending
Final Result Grotta win · Grotta 6–1 Ægir
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: 1. Deild
  • Fixture: Grotta vs Ægir
  • Kickoff: 2026-07-18 14:00:00
  • 1X2 (model): Home 45.0% · Draw 45.0% · Away 10.0%
  • xG (showing): Grotta 1.28 — Ægir 1.32 (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): See the Over/Under and BTTS cards for any directional lean text.
  • BTTS (model): Yes N/A · No N/A
  • Correct score (top bin): N/A

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 29, 2026 (UTC)

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1. Deild 1. Deild — Standings
# TEAM MP W D L PTS
1 Afturelding 22 14 3 5 45
2 Throttur Reykjavik 22 13 4 5 43
3 Fylkir 22 13 1 8 40
4 HK Kopavogur 22 12 2 8 38
5 Njardvik 22 12 2 8 38
6 Leiknir R. 22 8 4 10 28
7 IR Reykjavik 22 8 4 10 28
8 Grotta 22 8 3 11 27
9 Vestri 22 8 3 11 27
10 Völsungur 22 7 5 10 26
11 Grindavik 22 5 10 7 25
12 Ægir 22 2 3 17 9
# TEAM MP GS GC +/- PTS
1 Afturelding 22 65 33 +32 45
2 HK Kopavogur 22 52 40 +12 38
3 Throttur Reykjavik 22 50 25 +25 43
4 Fylkir 22 49 36 +13 40
5 IR Reykjavik 22 40 46 -6 28
6 Njardvik 22 38 29 +9 38
7 Grotta 22 36 43 -7 27
8 Leiknir R. 22 34 33 +1 28
9 Völsungur 22 32 44 -12 26
10 Vestri 22 30 43 -13 27
11 Grindavik 22 25 35 -10 25
12 Ægir 22 25 69 -44 9