Predictions / Football / Japan. J3 League / Matsumoto Yamaga vs Biwako Shiga

Prediction Audit: Matsumoto Yamaga vs Biwako Shiga Prediction, Odds & AI Betting Tips

Matsumoto Yamaga Matsumoto Yamaga
Aug 16, 2026 - 10:00
2 1.28
3 1.32
xG Accuracy: 52%
Biwako Shiga Biwako Shiga

AI correctly predicted the Biwako Shiga 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 Biwako Shiga Biwako Shiga ✔ Correct
  • Correct Score Insights 1-1, 0-1, 1-0, 1-2, 2-1 2-3 ✖ Incorrect

Model vs Closing Market

Strong Disagreement

The closing market prices Matsumoto Yamaga higher than the statistical model.

Largest probability gap: Matsumoto Yamaga -17.5 pp

Outcome Model Closing Market Difference Signal
Matsumoto Yamaga 34.2% 51.7% -17.5 pp Market Higher
Draw 29.6% 26.7% +3.0 pp Aligned
Biwako Shiga 36.1% 21.6% +14.5 pp Model Edge

The closing market estimates Matsumoto Yamaga's win probability at 51.7%, compared with the model's estimate of 34.2%, a difference of 17.5 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 (Biwako Shiga win 2–3).

Market Assessment

The market is materially more optimistic about Matsumoto Yamaga 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) — 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 Biwako Shiga higher (53.6% vs model 36.1%, 17.5 pp), but the model's lean was validated (Biwako Shiga win 2–3).

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Prediction Timeline

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

  1. Aug 16, 2026 · 09:59 UTC Forecast generated
    • Model 1X2 · Matsumoto Yamaga 34.2% · Draw 29.7% · Biwako Shiga 36.1%
    • xG · Matsumoto Yamaga 1.28 — Biwako Shiga 1.32
  2. Aug 16, 2026 · 09:29 UTC Opening odds snapshot PRE30
    • 1X2 odds · Matsumoto Yamaga 1.77 · Draw 3.43 · Biwako Shiga 4.24
    • Implied 1X2 · Matsumoto Yamaga 51.7% · Draw 26.7% · Biwako Shiga 21.6%
    • Bookmaker · Pinnacle
  3. Aug 16, 2026 · 09:59 UTC Closing snapshot recorded PRE1
    • 1X2 odds · Matsumoto Yamaga 1.77 · Draw 3.43 · Biwako Shiga 4.24
    • Implied 1X2 · Matsumoto Yamaga 51.7% · Draw 26.7% · Biwako Shiga 21.6%
    • Bookmaker · Pinnacle
  4. Aug 16, 2026 · 10:00 UTC Kickoff
  5. FT Full-time result Biwako Shiga 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 54/100 · Moderate
  • Validation: Warning
  • Large market gap (17 pp)
Evidence ★★★★★
  • No strong statistical edge
  • Pricing remains divergent
  • Validation warning
Pricing proximity (inverse gap) 4/100
Monitoring Confidence 19/100

Validation Report

Immutable Snapshot

Prediction Time: Aug 11, 2026 · 00:56 UTC Snapshot ID: dp-3600281

Closing Odds 1.77
AI Fair Odds —
CLV Pending
Final Result Biwako Shiga win · Matsumoto Yamaga 2–3 Biwako Shiga
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

Quick read on how the model reads this matchup.

  • League: J3 League
  • Fixture: Matsumoto Yamaga vs Biwako Shiga
  • Kickoff: 2026-08-16 10:00:00
  • 1X2 (model): Home 34.2% · Draw 29.7% · Away 36.1%
  • xG (showing): Matsumoto Yamaga 1.28 — Biwako Shiga 1.32 (total xG ≈ 2.6)
  • Value headline: None (actionable) — best tracked EV is about +1.2%, 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%)

Saying “no value” on a snapshot is a feature, not a bug: it protects readers from forcing a play when the edge is not there.

Prefer skipping to over-staking when the engine is honest about missing edge.

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 02, 2026 (UTC)

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J3 League J3 League — Standings
# TEAM MP W D L PTS
1 Kagoshima United 8 6 2 0 20
2 Ehime FC 8 5 2 1 17
3 Osaka 8 4 4 0 16
4 Renofa Yamaguchi 8 4 2 2 14
5 Nara Club 8 4 2 2 14
6 FC Gifu 8 4 1 3 13
7 Roasso Kumamoto 8 3 4 1 13
8 Sagamihara 8 3 3 2 12
9 Biwako Shiga 8 4 0 4 12
10 FC Ryukyu 8 3 2 3 11
11 Parceiro Nagano 8 3 2 3 11
12 Kanazawa 8 3 1 4 10
13 Gainare Tottori 8 3 1 4 10
14 Tochigi SC 8 2 3 3 9
15 Matsumoto Yamaga 8 1 5 2 8
16 Fukushima United 8 2 1 5 7
17 Kitakyushu 8 1 4 3 7
18 Thespakusatsu Gunma 8 2 0 6 6
19 Kochi United 8 1 2 5 5
20 Kamatamare Sanuki 8 1 1 6 4
# TEAM MP GS GC +/- PTS
1 FC Gifu 8 19 8 +11 13
2 Ehime FC 8 19 9 +10 17
3 Nara Club 8 18 16 +2 14
4 Osaka 8 17 7 +10 16
5 Kagoshima United 8 16 8 +8 20
6 Fukushima United 8 16 20 -4 7
7 Sagamihara 8 14 10 +4 12
8 Kanazawa 8 14 13 +1 10
9 Biwako Shiga 8 14 14 0 12
10 Renofa Yamaguchi 8 11 7 +4 14
11 Parceiro Nagano 8 11 12 -1 11
12 Tochigi SC 8 11 14 -3 9
13 Gainare Tottori 8 11 18 -7 10
14 FC Ryukyu 8 10 10 0 11
15 Kitakyushu 8 10 16 -6 7
16 Kamatamare Sanuki 8 10 17 -7 4
17 Matsumoto Yamaga 8 8 10 -2 8
18 Roasso Kumamoto 8 7 4 +3 13
19 Thespakusatsu Gunma 8 7 15 -8 6
20 Kochi United 8 3 18 -15 5
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