Predictions / Football / Argentina. Primera Nacional / All Boys vs San Telmo

Prediction Audit: All Boys vs San Telmo Prediction, Odds & AI Betting Tips

All Boys All Boys
Sep 12, 2026 - 18:30
0 1.44
1 1.16
xG Accuracy: 64%
San Telmo San Telmo

The model missed the final outcome (San Telmo win 0–1).

The model had projected All Boys at 41.9%, 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 Over 2.5 Under 2.5 (1 goals) ✖ Incorrect
  • Both Teams To Score BTTS Yes No ✖ Incorrect
  • 1X2 All Boys San Telmo ✖ Incorrect
  • Correct Score Insights 1-1, 1-0, 2-1, 0-1, 2-0 0-1 ✔ Correct

Model vs Closing Market

Strong Disagreement

The closing market prices All Boys higher than the statistical model.

Largest probability gap: All Boys -14.1 pp

Outcome Model Closing Market Difference Signal
All Boys 41.9% 56.0% -14.1 pp Market Higher
Draw 29.3% 28.4% +0.9 pp Aligned
San Telmo 28.8% 15.6% +13.2 pp Model Edge

The closing market estimates All Boys's win probability at 56.0%, compared with the model's estimate of 41.9%, a difference of 14.1 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 San Telmo win 0–1.

Market Assessment

The market is materially more optimistic about All Boys 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

  • Exact score 0–1 fell within the model's highlighted bins

What failed

  • Both Teams To Score: model leaned BTTS Yes; match finished BTTS No
  • Over / Under 2.5: model leaned Over 2.5; match finished Under 2.5 (1 goals)

Market lesson

The closing market differed from the model on All Boys by 14.1 percentage points (56.0% vs model 41.9%) — 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 12, 2026 · 18:29 UTC Forecast generated
    • Model 1X2 · All Boys 41.9% · Draw 29.3% · San Telmo 28.8%
    • xG · All Boys 1.44 — San Telmo 1.16
  2. Sep 12, 2026 · 18:05 UTC Opening odds snapshot PRE30
    • 1X2 odds · All Boys 1.69 · Draw 3.33 · San Telmo 6.06
    • Implied 1X2 · All Boys 56.0% · Draw 28.4% · San Telmo 15.6%
    • Bookmaker · Pinnacle
  3. Sep 12, 2026 · 18:29 UTC Closing snapshot recorded PRE1
    • 1X2 odds · All Boys 1.69 · Draw 3.33 · San Telmo 6.06
    • Implied 1X2 · All Boys 56.0% · Draw 28.4% · San Telmo 15.6%
    • Bookmaker · Pinnacle
  4. Sep 12, 2026 · 18:30 UTC Kickoff
  5. FT Full-time result San Telmo win · 0–1
  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 (14 pp)
Evidence ★★★★★
  • No strong statistical edge
  • Market has already priced much of the edge
  • Validation warning
Pricing proximity (inverse gap) 29/100
Betting Confidence 44/100

Validation Report

Immutable Snapshot

Prediction Time: Sep 07, 2026 · 02:57 UTC Snapshot ID: dp-7468316

Closing Odds 1.69
AI Fair Odds —
CLV Pending
Final Result San Telmo win · All Boys 0–1 San Telmo
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 Nacional
  • Fixture: All Boys vs San Telmo
  • Kickoff: 2026-09-12 18:30:00
  • 1X2 (model): Home 41.9% · Draw 29.3% · Away 28.8%
  • xG (showing): All Boys 1.44 — San Telmo 1.16 (total xG ≈ 2.6)
  • Best +EV line (same label as hero card when Primary thresholds are not met): BTTS Yes
  • Model: 54.0% · Implied: 34.9% · Probability edge: +19.1 pts · Est. EV: +51.2%
  • BTTS (model): Yes 54.0% · No 46.0%
  • Correct score (top bin): 1-1 (12.4%)

Use the cards for tiering; this text only restates the same inputs in narrative form.

1X2 can look balanced even when side markets show clearer structure.

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

September 29, 2026 (UTC)

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Primera Nacional Primera Nacional — Standings
# TEAM MP W D L PTS
1 Ferro Carril Oeste 31 18 7 6 61
2 Deportivo Moron 31 16 7 8 55
3 Godoy Cruz 31 15 8 8 53
4 Deportivo Madryn 31 13 11 7 50
5 Colon Santa Fe 31 13 10 8 49
6 Almirante Brown 31 12 10 9 46
7 CA Estudiantes 31 12 9 10 45
8 Ciudad de Bolívar 31 10 12 9 42
9 Los Andes 31 9 13 9 40
10 Chaco For Ever 31 9 9 13 36
11 Defensores De Belgrano 31 8 12 11 36
12 Racing Cordoba 31 9 9 13 36
13 San Telmo 31 8 10 13 34
14 All Boys 31 6 15 10 33
15 Central Norte 31 6 14 11 32
16 Atletico Mitre 31 6 14 11 32
17 San Miguel 31 6 13 12 31
18 Acassuso 31 7 8 16 29
# TEAM MP GS GC +/- PTS
1 Deportivo Moron 31 49 31 +18 55
2 Deportivo Madryn 31 44 28 +16 50
3 Godoy Cruz 31 40 28 +12 53
4 Colon Santa Fe 31 38 25 +13 49
5 Ferro Carril Oeste 31 36 25 +11 61
6 CA Estudiantes 31 29 26 +3 45
7 Chaco For Ever 31 28 31 -3 36
8 Racing Cordoba 31 28 38 -10 36
9 Atletico Mitre 31 27 39 -12 32
10 Ciudad de Bolívar 31 26 28 -2 42
11 San Telmo 31 25 34 -9 34
12 San Miguel 31 25 36 -11 31
13 Los Andes 31 24 21 +3 40
14 Almirante Brown 31 23 18 +5 46
15 Defensores De Belgrano 31 23 27 -4 36
16 Acassuso 31 22 34 -12 29
17 Central Norte 31 19 28 -9 32
18 All Boys 31 17 26 -9 33
Primera Nacional Argentina. Primera Nacional Predictions