Predictions / Football / Chile. Primera B / Antofagasta vs Santiago Wanderers

Prediction Audit: Antofagasta vs Santiago Wanderers Prediction, Odds & AI Betting Tips

Antofagasta Antofagasta
Aug 13, 2026 - 00:30
0 1.41
0 1.19
xG Accuracy: 49%
Santiago Wanderers Santiago Wanderers

The model missed the final outcome (Draw 0–0).

The model had projected Antofagasta 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 Under 2.5 (0 goals) ✔ Correct
  • Both Teams To Score BTTS Yes No ✖ Incorrect
  • 1X2 Antofagasta Draw ✖ Incorrect
  • Correct Score Insights 1-1, 1-0, 0-1, 2-1, 0-0 0-0 ✔ Correct

Model vs Closing Market

Strong Disagreement

The closing market prices Antofagasta higher than the statistical model.

Largest probability gap: Antofagasta -13.1 pp

Outcome Model Closing Market Difference Signal
Antofagasta 40.4% 53.5% -13.1 pp Market Higher
Draw 29.4% 24.4% +5.0 pp Model Higher
Santiago Wanderers 30.1% 22.1% +8.0 pp Model Higher

The closing market estimates Antofagasta's win probability at 53.5%, compared with the model's estimate of 40.4%, a difference of 13.1 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 Draw 0–0.

Market Assessment

The market is materially more optimistic about Antofagasta 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

  • Under 2.5 goals aligned with the xG profile
  • Exact score 0–0 fell within the model's highlighted bins

What failed

  • Both Teams To Score: model leaned BTTS Yes; match finished BTTS No
  • 1X2: model leaned Antofagasta; match finished Draw

Market lesson

The closing market differed from the model on Antofagasta by 13.1 percentage points (53.5% 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. Aug 13, 2026 · 00:29 UTC Forecast generated
    • Model 1X2 · Antofagasta 40.5% · Draw 29.4% · Santiago Wanderers 30.1%
    • xG · Antofagasta 1.41 — Santiago Wanderers 1.19
  2. Aug 12, 2026 · 23:59 UTC Opening odds snapshot PRE30
    • 1X2 odds · Antofagasta 1.71 · Draw 3.75 · Santiago Wanderers 4.14
    • Implied 1X2 · Antofagasta 53.5% · Draw 24.4% · Santiago Wanderers 22.1%
    • Bookmaker · Pinnacle
  3. Aug 13, 2026 · 00:29 UTC Closing snapshot recorded PRE1
    • 1X2 odds · Antofagasta 1.71 · Draw 3.75 · Santiago Wanderers 4.14
    • Implied 1X2 · Antofagasta 53.5% · Draw 24.4% · Santiago Wanderers 22.1%
    • Bookmaker · Pinnacle
  4. Aug 13, 2026 · 00:30 UTC Kickoff
  5. FT Full-time result Draw · 0–0
  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: Monitor
Historical Decision Monitor
Outcome Missed
Pre-match metrics (historical context)
Prediction Reliability 56/100 · Moderate
  • Validation: Warning
  • Large market gap (13 pp)
Evidence ★★★★★
  • No strong statistical edge
  • Market has already priced much of the edge
  • Validation warning
Pricing proximity (inverse gap) 34/100
Betting Confidence 44/100

Validation Report

Immutable Snapshot

Prediction Time: Aug 07, 2026 · 01:34 UTC Snapshot ID: dp-3151411

Closing Odds 1.71
AI Fair Odds —
CLV Pending
Final Result Draw · Antofagasta 0–0 Santiago Wanderers
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: Primera B
  • Fixture: Antofagasta vs Santiago Wanderers
  • Kickoff: 2026-08-13 00:30:00
  • 1X2 (model): Home 40.5% · Draw 29.4% · Away 30.1%
  • xG (showing): Antofagasta 1.41 — Santiago Wanderers 1.19 (total xG ≈ 2.6)
  • Value headline: None — no positive EV on tracked lines at current best prices (same as the decision block: 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 54.2% · 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%)

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.

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: 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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Primera B Primera B — Standings
# TEAM MP W D L PTS
1 Santiago Wanderers 24 12 8 4 44
2 Cobreloa 24 11 9 4 42
3 San Luis 24 11 8 5 41
4 Magallanes 25 11 7 7 40
5 Antofagasta 25 10 8 7 38
6 Recoleta 25 10 8 7 38
7 San Marcos de Arica 25 9 9 7 36
8 Union Espanola 25 10 6 9 36
9 D. Puerto Montt 25 10 4 11 34
10 Deportes Temuco 25 8 8 9 32
11 Deportes Copiapo 24 8 7 9 31
12 Deportes Iquique 25 6 10 9 28
13 Curico Unido 25 6 9 10 27
14 Deportes Santa Cruz 25 4 10 11 22
15 Union San Felipe 23 5 7 11 22
16 Rangers de Talca 25 4 6 15 18
# TEAM MP GS GC +/- PTS
1 Antofagasta 25 42 26 +16 38
2 Cobreloa 24 42 27 +15 42
3 Magallanes 25 41 38 +3 40
4 Santiago Wanderers 24 40 25 +15 44
5 Deportes Temuco 25 40 35 +5 32
6 San Luis 24 38 29 +9 41
7 Recoleta 25 36 33 +3 38
8 Deportes Iquique 25 33 30 +3 28
9 Deportes Copiapo 24 33 38 -5 31
10 Union Espanola 25 32 32 0 36
11 San Marcos de Arica 25 31 23 +8 36
12 D. Puerto Montt 25 26 31 -5 34
13 Deportes Santa Cruz 25 26 38 -12 22
14 Rangers de Talca 25 23 40 -17 18
15 Curico Unido 25 22 38 -16 27
16 Union San Felipe 23 15 37 -22 22
Primera B Chile. Primera B Predictions