Primera Nacional · Sunday, 30 August 2026 · 19:30. Our rating makes this 34% to go over 2.5 goals, so our lean is under. The Primera Nacional average is 30%.
Open this match in the app →| Market | Yes | No | Our call |
|---|---|---|---|
| Over 2.5 goals | 34% | 66% | Under |
| Over 3.5 goals | 13% | 87% | no pick |
| Both teams to score | 41% | 59% | no pick |
The result model puts Atlanta at 48%, the draw at 29% and San Martin S.J. at 24%, from expected goals of 1.29 and 0.82.
The league sets the starting point. Primera Nacional has produced over 2.5 goals in 30% of its matches, and that is where a team with no record of its own would sit.
Each side's own record. Atlanta have 11 in 25 this season (5 of 13 at home), San Martin S.J. 9 in 24 (5 of 13 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 36% and 34%.
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 34%.
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 35%, from expected goals of 1.29 for Atlanta and 0.82 for San Martin S.J.. Folding in 30% of that view gives 34%.
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 |
|---|---|---|---|---|
| Atlanta | 25 | 44% | 20% | 44% |
| San Martin S.J. | 24 | 38% | 4% | 63% |
More: Atlanta season stats · San Martin S.J. season stats · Primera Nacional table and form. Ratings are calibrated probabilities, not tips — a 60% call is expected to miss two times in five.