Predictions / Football / Netherlands. Eredivisie / Groningen vs PEC Zwolle

Prediction Audit: Groningen vs PEC Zwolle Prediction, Odds & AI Betting Tips

Groningen Groningen
Sep 18, 2026 - 18:00
3 1.65
0 1.42
xG Accuracy: 47%
PEC Zwolle PEC Zwolle

AI correctly predicted the Groningen win.

The match finished 3–0, 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 (3 goals) ✖ Incorrect
  • Both Teams To Score BTTS No No ✔ Correct
  • 1X2 Groningen Groningen ✔ Correct
  • Correct Score Insights 1-1, 2-1, 1-2, 1-0, 0-1 3-0 ✖ Incorrect

Model vs Closing Market

Strong Disagreement

The closing market prices Groningen higher than the statistical model.

Largest probability gap: Groningen -14.3 pp

Outcome Model Closing Market Difference Signal
Groningen 47.9% 62.2% -14.3 pp Market Higher
Draw 25.4% 21.7% +3.6 pp Aligned
PEC Zwolle 26.7% 16.1% +10.6 pp Model Edge

The closing market estimates Groningen's win probability at 62.2%, compared with the model's estimate of 47.9%, a difference of 14.3 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 (Groningen win 3–0).

Market Assessment

The market is materially more optimistic about Groningen 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 3.07) — 3 goals materialised
  • Both Teams To Score (No) matched the full-time result

What failed

  • Over / Under 2.5: model leaned Under 2.5; match finished Over 2.5 (3 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 Groningen higher (62.2% vs model 47.9%, 14.3 pp), but the model's lean was validated (Groningen win 3–0).

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. Sep 18, 2026 · 19:28 UTC Forecast generated
    • Model 1X2 · Groningen 47.9% · Draw 25.4% · PEC Zwolle 26.8%
    • xG · Groningen 1.65 — PEC Zwolle 1.42
  2. Sep 18, 2026 · 17:31 UTC Opening odds snapshot PRE30
    • 1X2 odds · Groningen 1.55 · Draw 4.44 · PEC Zwolle 5.99
    • Implied 1X2 · Groningen 62.2% · Draw 21.7% · PEC Zwolle 16.1%
    • Bookmaker · Pinnacle
  3. Sep 18, 2026 · 18:00 UTC Closing snapshot recorded PRE1
    • 1X2 odds · Groningen 1.55 · Draw 4.44 · PEC Zwolle 5.99
    • Implied 1X2 · Groningen 62.2% · Draw 21.7% · PEC Zwolle 16.1%
    • Bookmaker · Pinnacle
  4. Sep 18, 2026 · 18:00 UTC Kickoff
  5. FT Full-time result Groningen win · 3–0
  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 56/100 · Moderate
  • Validation: Warning
  • Large market gap (14 pp)
Evidence ★★★★★
  • No strong statistical edge
  • Market has already priced much of the edge
  • Validation warning
Pricing proximity (inverse gap) 28/100
Betting Confidence 44/100

Validation Report

Immutable Snapshot

Prediction Time: Sep 12, 2026 · 02:21 UTC Snapshot ID: dp-8222449

Closing Odds 1.55
AI Fair Odds —
CLV Pending
Final Result Groningen win · Groningen 3–0 PEC Zwolle
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: Eredivisie
  • Fixture: Groningen vs PEC Zwolle
  • Kickoff: 2026-09-18 18:00:00
  • 1X2 (model): Home 47.9% · Draw 25.4% · Away 26.8%
  • xG (showing): Groningen 1.65 — PEC Zwolle 1.42 (total xG ≈ 3.07)
  • Best +EV line (same label as hero card when Primary thresholds are not met): Under 2.5 goals
  • Model: 40.8% · Implied: 31.6% · Probability edge: +9.2 pts · Est. EV: +26.5%
  • BTTS (model): Yes 62.7% · No 37.3%
  • Correct score (top bin): 1-1 (10.9%)

Totals and BTTS are evaluated against current market prices where available.

Correct score remains high-variance even when a line is most likely on paper.

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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Eredivisie Eredivisie — Standings
# TEAM MP W D L PTS
1 AZ Alkmaar 7 6 1 0 19
2 Feyenoord 7 5 2 0 17
3 PSV Eindhoven 7 5 1 1 16
4 Twente 7 5 1 1 16
5 Ajax 7 4 2 1 14
6 Fortuna Sittard 7 4 1 2 13
7 Excelsior 7 3 2 2 11
8 Groningen 7 3 2 2 11
9 GO Ahead Eagles 7 2 4 1 10
10 Heerenveen 7 2 3 2 9
11 NEC Nijmegen 7 2 2 3 8
12 Sparta Rotterdam 7 1 2 4 5
13 Telstar 7 1 2 4 5
14 Cambuur 7 1 2 4 5
15 Utrecht 7 1 2 4 5
16 PEC Zwolle 7 1 1 5 4
17 ADO Den Haag 7 0 2 5 2
18 Willem II 7 0 2 5 2
# TEAM MP GS GC +/- PTS
1 Feyenoord 7 25 7 +18 17
2 PSV Eindhoven 7 24 10 +14 16
3 Ajax 7 21 9 +12 14
4 AZ Alkmaar 7 18 6 +12 19
5 GO Ahead Eagles 7 16 14 +2 10
6 Twente 7 15 7 +8 16
7 Excelsior 7 15 9 +6 11
8 Groningen 7 15 13 +2 11
9 Fortuna Sittard 7 13 14 -1 13
10 NEC Nijmegen 7 12 13 -1 8
11 Heerenveen 7 11 9 +2 9
12 Utrecht 7 11 24 -13 5
13 Sparta Rotterdam 7 10 17 -7 5
14 Cambuur 7 10 19 -9 5
15 ADO Den Haag 7 7 17 -10 2
16 PEC Zwolle 7 6 20 -14 4
17 Willem II 7 6 20 -14 2
18 Telstar 7 5 12 -7 5
# TEAM MP xG xGC +/- PTS
1 PSV Eindhoven 7 12.0 2.7 +9.3 16
2 Feyenoord 7 11.3 3.8 +7.5 17
3 AZ Alkmaar 7 12.4 5.5 +6.9 19
4 Twente 7 5.6 1.5 +4.1 16
5 Ajax 7 5.7 3.1 +2.6 14
6 NEC Nijmegen 7 6.9 4.9 +2.0 8
7 Excelsior 7 4.8 3.9 +0.9 11
8 GO Ahead Eagles 7 6.7 7.7 -1.0 10
9 Telstar 7 6.1 7.1 -1.0 5
10 Groningen 7 7.3 8.6 -1.3 11
11 Heerenveen 7 5.3 7.3 -2.0 9
12 Willem II 7 4.6 6.7 -2.1 2
13 Sparta Rotterdam 7 5.8 8.0 -2.2 5
14 PEC Zwolle 7 4.1 6.4 -2.3 4
15 Utrecht 7 5.3 8.2 -2.9 5
16 Cambuur 7 5.8 11.2 -5.4 5
17 ADO Den Haag 7 3.2 9.3 -6.1 2
18 Fortuna Sittard 7 3.7 10.7 -7.0 13