Primera · Saturday, 13 June 2026. Final score 3–0 (half-time 3–0). Rebuilt from the season as it stood that morning, our rating would have been 57% for over 2.5 goals. This match is older than our frozen ratings ledger, which keeps 30 days, so that figure is a reconstruction from pre-match data rather than a number we published at the time — a distinction worth making, because only the frozen ones prove what we actually said beforehand.
Open this match in the app →| Market | Yes | No | Our call |
|---|---|---|---|
| Over 2.5 goals | 57% | 43% | Over |
| Over 3.5 goals | 34% | 66% | no pick |
| Both teams to score | 52% | 48% | Yes |
The result model puts Colo Colo at 68%, the draw at 18% and Cobresal at 13%, from expected goals of 2.38 and 0.95.
The league sets the starting point. Primera has produced over 2.5 goals in 51% of its matches, and that is where a team with no record of its own would sit.
Each side's own record. Colo Colo have 6 in 14 this season (2 of 7 at home), Cobresal 7 in 13 (4 of 6 away). Those records are pulled toward the league rate with the weight of about 24 matches — enough that two or three unusual games cannot swing a rating — giving 48% and 52%.
Last season still counts, briefly. With 14 and 13 games played this season, last season's rates are still blended in and fade out entirely by game 40 — the point at which our testing showed they stop adding accuracy. A single season is part luck, so each club's record is first pulled toward the league average by 34 games' weight. That moves the two figures to 52% and 53%.
The mix. Weighted 40% home side, 40% away side and 20% league — the split that beat every alternative across 30,582 matches of testing — that gives 52%.
Head to head. These sides have met 5 times in three years, producing over 2.5 goals in 80%. That nudges the number 5% of the way toward the head-to-head pattern — deliberately small, because fixtures change more than reputations do — landing on 54%.
Goal expectation. Separately a Poisson model built from attack and defence strength — using real expected-goals data where the league has it — puts this match at 65%, from expected goals of 2.38 for Colo Colo and 0.95 for Cobresal. Folding in 30% of that view gives 57%.
This breakdown is generated from the same inputs the rating uses, so it cannot describe a calculation we did not perform. The full model is set out in the methodology.
More: Colo Colo season stats · Cobresal season stats · Primera table and form. Ratings are calibrated probabilities, not tips — a 60% call is expected to miss two times in five.