Primera A · Saturday, 8 August 2026. Final score 2–0 (half-time 0–0). Before kick-off we rated it 50% under 2.5 goals — the match finished with 2, so that call landed. That rating was frozen into a version-controlled ledger before the game and has not been touched since.
Open this match in the app →| Market | Yes | No | Our call |
|---|---|---|---|
| Over 2.5 goals | 50% | 50% | Over |
| Over 3.5 goals | 27% | 73% | no pick |
| Both teams to score | 49% | 51% | No |
The result model puts Santa Fe at 80%, the draw at 14% and Chico at 6%, from expected goals of 2.42 and 0.51.
The league sets the starting point. Primera A has produced over 2.5 goals in 44% of its matches, and that is where a team with no record of its own would sit.
Each side's own record. Santa Fe have 13 in 25 this season (8 of 12 at home), Chico 10 in 20 (7 of 11 away). Those records are pulled toward the league rate with the weight of about 32 matches — enough that two or three unusual games cannot swing a rating — giving 51% and 49%.
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 49%.
Head to head. These sides have met 6 times in three years, producing over 2.5 goals in 33%. That nudges the number 10% of the way toward the head-to-head pattern — deliberately small, because fixtures change more than reputations do — landing on 47%.
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 56%, from expected goals of 2.42 for Santa Fe and 0.51 for Chico. Folding in 30% of that view gives 50%.
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: Santa Fe season stats · Chico season stats · Primera A table and form. Ratings are calibrated probabilities, not tips — a 60% call is expected to miss two times in five.