Primera Nacional · Sunday, 9 August 2026. Final score 2–0 (half-time 1–0). Before kick-off we rated it 71% 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 | 29% | 71% | Under |
| Over 3.5 goals | 13% | 87% | no pick |
| Both teams to score | 38% | 62% | No |
The result model puts Gimnasia Y Tiro at 53%, the draw at 29% and Nueva Chicago at 18%, from expected goals of 1.28 and 0.6.
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. Gimnasia Y Tiro have 7 in 23 this season (2 of 12 at home), Nueva Chicago 7 in 22 (3 of 10 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 30%.
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 29%.
Head to head. These sides have met 3 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 29%.
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 29%, from expected goals of 1.28 for Gimnasia Y Tiro and 0.6 for Nueva Chicago. Folding in 30% of that view gives 29%.
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 |
|---|---|---|---|---|
| Gimnasia Y Tiro | 23 | 30% | 9% | 52% |
| Nueva Chicago | 22 | 32% | 14% | 36% |
More: Gimnasia Y Tiro season stats · Nueva Chicago season stats · Primera Nacional table and form. Ratings are calibrated probabilities, not tips — a 60% call is expected to miss two times in five.