MBModelBall
Predictions Locked

Mexico vs South Africa

World Cup · Thursday, June 11, 2026

7:00 PM UTC

Match completed

WHAT WE LEARNED

Match is complete. Results and accuracy analysis will be available once the match has been officially scored.

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Predictions Review

The Edge ★

Fingerprint-weighted ensemble

Mexico60%
Draw24%
South Africa16%

Naive Average

Equal-weight baseline

Mexico59%
Draw25%
South Africa17%

INDIVIDUAL MODELS

Grok 3

The Contrarian

Mexico66%
Draw22%
South Africa12%

GPT-5.4

The Market Baseline

Mexico56%
Draw25%
South Africa19%

Claude Sonnet 4.6

The Analyst

Mexico58%
Draw24%
South Africa18%

Gemini 3.1 Pro

The Generalist

Mexico55%
Draw28%
South Africa17%

Fingerprint Analysis

Pre-Match Divergence
MEDIUM (11pp spread)
Most Divergent Model
Grok 3
Fingerprint Prediction
grok overweights market odds

Once the match is scored, we'll validate whether the fingerprint correctly predicted model accuracy. This is how we prove (or disprove) that knowing biases helps prediction.

Predicted scoreline

1-0
1-0
14.2%
2-0
12.8%
1-1
12.0%
0-0
10.2%
2-1
9.2%
Each model's scoreline pick
Claude Sonnet 4.6 1-0Gemini 3.1 Pro 1-0GPT-5.4 1-0Grok 3 1-0

Goal expectancy 2.40 per match (default — no totals market); split fitted to the calibrated probabilities shown above with a Dixon–Coles low-score correction. Mexico listed first.

Ensemble Logic

Odds Divergence Context

Market gives underdog >35% probability

Weights:

Grok 39% · GPT 26% · Claude 18% · Gemini 18%

Active: PC05 (Overconfidence Index)

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