Primera Nacional · Saturday, 15 August 2026 · 23:00. Final score 2–0 (half-time 0–0). Before kick-off we rated it 73% 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 | 27% | 73% | Under |
| Over 3.5 goals | 8% | 92% | no pick |
| Both teams to score | 37% | 63% | No |
The result model puts CA Estudiantes at 47%, the draw at 32% and Chacarita Juniors at 21%, from expected goals of 1.1 and 0.64.
| Market | Price | Implied | Our rating | Edge |
|---|---|---|---|---|
| Over 2.5 goals | 3.40 | 28% | 27% | -1% |
| Under 2.5 goals | 1.33 | 72% | 73% | +1% |
| Both teams to score | 2.75 | 34% | 37% | +3% |
Implied percentages have the bookmaker's margin removed, so they add to 100 and can be compared with our rating directly. Edge is simply the gap between the two. A positive edge means our model thinks the outcome is likelier than the price suggests — it is not a tip, and a high probability with a negative edge is a poor bet however safe it looks. Prices are a pre-match snapshot from a single bookmaker and move constantly.
Match odds: CA Estudiantes 1.85, draw 3.10, Chacarita Juniors 5.00.
The league sets the starting point. Primera Nacional has produced over 2.5 goals in 29% of its matches, and that is where a team with no record of its own would sit.
Each side's own record. CA Estudiantes have 6 in 24 this season (3 of 12 at home), Chacarita Juniors 5 in 23 (2 of 12 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 27% and 24%.
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 27%.
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 27%.
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 25%, from expected goals of 1.1 for CA Estudiantes and 0.64 for Chacarita Juniors. Folding in 30% of that view gives 27%.
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.
| Team | Games | O2.5 | O3.5 | BTTS |
|---|---|---|---|---|
| CA Estudiantes | 24 | 25% | 0% | 33% |
| Chacarita Juniors | 23 | 22% | 9% | 30% |
More: CA Estudiantes season stats · Chacarita Juniors season stats · Primera Nacional table and form. Ratings are calibrated probabilities, not tips — a 60% call is expected to miss two times in five.