Predictions / Football / Australia. Western Australia NPL / Joondalup City vs Armadale

Prediction Audit: Joondalup City vs Armadale Prediction, Odds & AI Betting Tips

Joondalup City Joondalup City
Sep 05, 2026 - 07:00
1 1.41
2 1.19
xG Accuracy: 72%
Armadale Armadale

The model missed the final outcome (Armadale win 1–2).

The model had projected Joondalup City at 40.4%, but the full-time result went the other way.

Tracked markets vs full-time result

Prediction grade F

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 Yes Yes ✔ Correct
  • 1X2 Joondalup City Armadale ✖ Incorrect
  • Correct Score Insights 1-1, 1-0, 0-1, 2-1, 0-0 1-2 ✖ Incorrect

Model vs Closing Market

Strong Disagreement

The closing market prices Armadale higher than the statistical model.

Largest probability gap: Armadale -28.2 pp

Outcome Model Closing Market Difference Signal
Joondalup City 40.4% 20.5% +19.9 pp Model Edge
Draw 29.4% 21.1% +8.3 pp Model Higher
Armadale 30.1% 58.4% -28.2 pp Market Higher

The closing market estimates Armadale's win probability at 58.4%, compared with the model's estimate of 30.1%, a difference of 28.2 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 result was Armadale win 1–2.

Post Match Insights

What worked

  • Expected goals projected a high-scoring match (ΣxG 2.60) — 3 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 (3 goals)
  • 1X2: model leaned Joondalup City; match finished Armadale

Market lesson

The closing market differed from the model on Joondalup City by 28.2 percentage points (68.6% vs model 40.4%) — in this case the market view proved closer.

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Prediction Timeline

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

  1. Sep 05, 2026 · 06:59 UTC Forecast generated
    • Model 1X2 · Joondalup City 40.5% · Draw 29.4% · Armadale 30.1%
    • xG · Joondalup City 1.41 — Armadale 1.19
  2. Sep 05, 2026 · 06:29 UTC Opening odds snapshot PRE30
    • 1X2 odds · Joondalup City 4.46 · Draw 4.34 · Armadale 1.57
    • Implied 1X2 · Joondalup City 20.5% · Draw 21.1% · Armadale 58.4%
    • Bookmaker · Pinnacle
  3. Sep 05, 2026 · 06:59 UTC Closing snapshot recorded PRE1
    • 1X2 odds · Joondalup City 4.46 · Draw 4.34 · Armadale 1.57
    • Implied 1X2 · Joondalup City 20.5% · Draw 21.1% · Armadale 58.4%
    • Bookmaker · Pinnacle
  4. Sep 05, 2026 · 07:00 UTC Kickoff
  5. FT Full-time result Armadale win · 1–2
  6. FT Prediction missed 1X2 lean did not match full-time result
  7. Archived Prediction review

Historical Snapshot

Frozen at kickoff — the model output as it stood before the match started.

Historical verdict: Cautious / Wait

Historical label: Originally displayed as "Wait for validation".

Historical Decision Wait
Outcome Missed
Pre-match metrics (historical context)
Prediction Reliability 49/100 · Moderate
  • Validation: Warning
  • Large market gap (28 pp)
Evidence ★★★★★
  • No strong statistical edge
  • Market strongly disagrees on price
  • Validation warning
Pricing proximity (inverse gap) 0/100
Monitoring Confidence 13/100

Validation Report

Immutable Snapshot

Prediction Time: Sep 03, 2026 · 00:21 UTC Snapshot ID: dp-6704103

Closing Odds 1.57
AI Fair Odds —
CLV Pending
Final Result Armadale win · Joondalup City 1–2 Armadale
Prediction ✖ Missed
Decision Grade F

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: Western Australia NPL
  • Fixture: Joondalup City vs Armadale
  • Kickoff: 2026-09-05 07:00:00
  • 1X2 (model): Home 40.5% · Draw 29.4% · Away 30.1%
  • xG (showing): Joondalup City 1.41 — Armadale 1.19 (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 54.2% · No 45.8%) Value lean (pricing): O/U 2.5 Under 2.5; BTTS Yes
  • BTTS (model): Yes 54.2% · No 45.8%
  • 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.

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

Historical Recommendation

Historical Decision: Wait

Outcome: Missed — Pre-match 1X2 lean did not match 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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Western Australia NPL Western Australia NPL — Standings
# TEAM MP W D L PTS
1 Bayswater City 22 14 5 3 47
2 Olympic Kingsway 22 12 5 5 41
3 Perth RedStar 22 12 5 5 41
4 Perth 22 10 8 4 38
5 Fremantle City 22 9 8 5 35
6 Stirling Lions 22 9 3 10 30
7 Western Knights 22 6 7 9 25
8 Sorrento 22 7 3 12 24
9 Dianella White Eagle 22 6 5 11 23
10 Perth Glory II 22 5 6 11 21
11 Armadale 22 5 6 11 21
12 Balcatta 22 4 5 13 17
# TEAM MP GS GC +/- PTS
1 Bayswater City 22 60 27 +33 47
2 Perth 22 53 41 +12 38
3 Olympic Kingsway 22 44 29 +15 41
4 Fremantle City 22 44 34 +10 35
5 Perth Glory II 22 41 45 -4 21
6 Stirling Lions 22 40 38 +2 30
7 Armadale 22 40 56 -16 21
8 Western Knights 22 38 40 -2 25
9 Perth RedStar 22 35 29 +6 41
10 Dianella White Eagle 22 32 43 -11 23
11 Balcatta 22 29 54 -25 17
12 Sorrento 22 22 42 -20 24