Primera Nacional · Saturday, 22 August 2026 · 19:30. Our rating makes this 32% 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 | 32% | 68% | Under |
| Over 3.5 goals | 9% | 91% | no pick |
| Both teams to score | 48% | 52% | No |
The result model puts San Martin S.J. at 40%, the draw at 31% and Gimnasia Y Tiro at 29%, from expected goals of 1.08 and 0.88.
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. San Martin S.J. have 8 in 23 this season (3 of 10 at home), Gimnasia Y Tiro 7 in 25 (5 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 31% and 31%.
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 31%.
Head to head. These sides have met 2 times in three years, producing over 2.5 goals in 50%. 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 33%.
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 31%, from expected goals of 1.08 for San Martin S.J. and 0.88 for Gimnasia Y Tiro. Folding in 30% of that view gives 32%.
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 |
|---|---|---|---|---|
| San Martin S.J. | 23 | 35% | 0% | 61% |
| Gimnasia Y Tiro | 25 | 28% | 8% | 48% |
More: San Martin S.J. season stats · Gimnasia Y Tiro season stats · Primera Nacional table and form. Ratings are calibrated probabilities, not tips — a 60% call is expected to miss two times in five.