Predictions / Football / Japan. J2 League / Omiya Ardija vs Ventforet Kofu

Prediction Audit: Omiya Ardija vs Ventforet Kofu Prediction, Odds & AI Betting Tips

Omiya Ardija Omiya Ardija
Sep 26, 2026 - 08:00
5 1.43
1 1.17
xG Accuracy: 36%
Ventforet Kofu Ventforet Kofu

AI correctly predicted the Omiya Ardija win.

The match finished 5–1, 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 (6 goals) ✖ Incorrect
  • Both Teams To Score BTTS Yes Yes ✔ Correct
  • 1X2 Omiya Ardija Omiya Ardija ✔ Correct
  • Correct Score Insights 1-1, 1-0, 2-1, 0-1, 2-0 5-1 ✖ Incorrect

Model vs Closing Market

Strong Disagreement

The closing market prices Omiya Ardija higher than the statistical model.

Largest probability gap: Omiya Ardija -18.2 pp

Outcome Model Closing Market Difference Signal
Omiya Ardija 41.4% 59.6% -18.2 pp Market Higher
Draw 29.4% 22.5% +6.9 pp Model Higher
Ventforet Kofu 29.2% 17.9% +11.3 pp Model Edge

The closing market estimates Omiya Ardija's win probability at 59.6%, compared with the model's estimate of 41.4%, a difference of 18.2 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 (Omiya Ardija win 5–1).

Market Assessment

The market is materially more optimistic about Omiya Ardija 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) — 6 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 (6 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 Omiya Ardija higher (59.6% vs model 41.4%, 18.2 pp), but the model's lean was validated (Omiya Ardija win 5–1).

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. Sep 26, 2026 · 08:00 UTC Forecast generated
    • Model 1X2 · Omiya Ardija 41.4% · Draw 29.4% · Ventforet Kofu 29.3%
    • xG · Omiya Ardija 1.43 — Ventforet Kofu 1.17
  2. Sep 26, 2026 · 07:30 UTC Opening odds snapshot PRE30
    • 1X2 odds · Omiya Ardija 1.59 · Draw 4.21 · Ventforet Kofu 5.29
    • Implied 1X2 · Omiya Ardija 59.6% · Draw 22.5% · Ventforet Kofu 17.9%
    • Bookmaker · Pinnacle
  3. Sep 26, 2026 · 08:00 UTC Closing snapshot recorded PRE1
    • 1X2 odds · Omiya Ardija 1.59 · Draw 4.21 · Ventforet Kofu 5.29
    • Implied 1X2 · Omiya Ardija 59.6% · Draw 22.5% · Ventforet Kofu 17.9%
    • Bookmaker · Pinnacle
  4. Sep 26, 2026 · 08:00 UTC Kickoff
  5. FT Full-time result Omiya Ardija win · 5–1
  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 (18 pp)
Evidence ★★★★★
  • No strong statistical edge
  • Pricing remains divergent
  • Validation warning
Pricing proximity (inverse gap) 9/100
Betting Confidence 43/100

Validation Report

Immutable Snapshot

Prediction Time: Sep 21, 2026 · 00:39 UTC Snapshot ID: dp-10076853

Closing Odds 1.59
AI Fair Odds —
CLV Pending
Final Result Omiya Ardija win · Omiya Ardija 5–1 Ventforet Kofu
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

Below is a compact, numbers-first snapshot aligned with the same engine as the cards above.

  • League: J2 League
  • Fixture: Omiya Ardija vs Ventforet Kofu
  • Kickoff: 2026-09-26 08:00:00
  • 1X2 (model): Home 41.4% · Draw 29.4% · Away 29.3%
  • xG (showing): Omiya Ardija 1.43 — Ventforet Kofu 1.17 (total xG ≈ 2.6)
  • Value headline: At least one tracked line reaches the headline EV threshold — align with the hero / Primary card if shown.
  • 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 54.1% · No 45.9%) Value lean (pricing): O/U 2.5 Under 2.5; BTTS Yes
  • BTTS (model): Yes 54.1% · No 45.9%
  • Correct score (top bin): 1-1 (12.4%)

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.

If lines move materially, re-run generation or refresh — implied probabilities and any future EV readouts will change first.

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

October 01, 2026 (UTC)

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J2 League J2 League — Standings
# TEAM MP W D L PTS
1 Vegalta Sendai 8 5 2 1 17
2 Omiya Ardija 8 4 4 0 16
3 Albirex Niigata 8 5 1 2 16
4 Shonan Bellmare 8 4 3 1 15
5 Kataller Toyama 8 4 2 2 14
6 Yokohama FC 8 4 2 2 14
7 Tokushima Vortis 8 4 1 3 13
8 Montedio Yamagata 8 4 0 4 12
9 Fujieda MYFC 8 3 3 2 12
10 Tegevajaro Miyazaki 8 3 2 3 11
11 Tochigi City 8 3 1 4 10
12 Blaublitz Akita 8 2 4 2 10
13 Jubilo Iwata 8 3 1 4 10
14 Vanraure Hachinohe 8 3 1 4 10
15 Iwaki 8 3 0 5 9
16 Oita Trinita 8 1 5 2 8
17 Sagan Tosu 8 2 2 4 8
18 Ventforet Kofu 8 2 1 5 7
19 Consadole Sapporo 8 1 2 5 5
20 Imabari 8 1 1 6 4
# TEAM MP GS GC +/- PTS
1 Omiya Ardija 8 16 7 +9 16
2 Kataller Toyama 8 16 8 +8 14
3 Yokohama FC 8 16 11 +5 14
4 Vegalta Sendai 8 15 7 +8 17
5 Tochigi City 8 14 13 +1 10
6 Fujieda MYFC 8 12 9 +3 12
7 Tegevajaro Miyazaki 8 12 12 0 11
8 Blaublitz Akita 8 11 10 +1 10
9 Albirex Niigata 8 11 12 -1 16
10 Iwaki 8 11 15 -4 9
11 Montedio Yamagata 8 10 6 +4 12
12 Jubilo Iwata 8 10 11 -1 10
13 Consadole Sapporo 8 10 17 -7 5
14 Shonan Bellmare 8 9 7 +2 15
15 Tokushima Vortis 8 8 8 0 13
16 Sagan Tosu 8 8 11 -3 8
17 Oita Trinita 8 7 6 +1 8
18 Imabari 8 7 17 -10 4
19 Ventforet Kofu 8 6 15 -9 7
20 Vanraure Hachinohe 8 5 12 -7 10
J2 League Japan. J2 League Predictions