Primera Nacional · Wednesday, 19 August 2026 · 19:00. Our rating makes this 39% to go over 2.5 goals, so our lean is under. The Primera Nacional average is 29%.
Open this match in the app →| Market | Yes | No | Our call |
|---|---|---|---|
| Over 2.5 goals | 39% | 61% | Under |
| Over 3.5 goals | 14% | 86% | no pick |
| Both teams to score | 43% | 57% | No |
The result model puts Chacarita Juniors at 58%, the draw at 24% and Club Atlético Güemes at 18%, from expected goals of 1.65 and 0.79.
| Market | Price | Implied | Our rating | Edge |
|---|---|---|---|---|
| Over 2.5 goals | 2.50 | 38% | 39% | +1% |
| Under 2.5 goals | 1.50 | 63% | 61% | -1% |
| Both teams to score | 2.25 | 41% | 43% | +2% |
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: Chacarita Juniors 1.80, draw 3.10, Club Atlético Güemes 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. Chacarita Juniors have 5 in 24 this season (3 of 11 at home), Club Atlético Güemes 12 in 24 (7 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 26% and 42%.
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 33%.
Head to head. These sides have met 3 times in three years, producing over 2.5 goals in 67%. 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 36%.
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 44%, from expected goals of 1.65 for Chacarita Juniors and 0.79 for Club Atlético Güemes. Folding in 30% of that view gives 39%.
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 |
|---|---|---|---|---|
| Chacarita Juniors | 24 | 21% | 8% | 29% |
| Club Atlético Güemes | 24 | 50% | 21% | 63% |
More: Chacarita Juniors season stats · Club Atlético Güemes season stats · Primera Nacional table and form. Ratings are calibrated probabilities, not tips — a 60% call is expected to miss two times in five.