Primera Division · Friday, 22 May 2026. Final score 0–1 (half-time 0–1). Rebuilt from the season as it stood that morning, our rating would have been 40% for over 2.5 goals. This match is older than our frozen ratings ledger, which keeps 30 days, so that figure is a reconstruction from pre-match data rather than a number we published at the time — a distinction worth making, because only the frozen ones prove what we actually said beforehand.
Open this match in the app →| Market | Yes | No | Our call |
|---|---|---|---|
| Over 2.5 goals | 40% | 60% | Under |
| Over 3.5 goals | 20% | 80% | no pick |
| Both teams to score | 49% | 51% | No |
The result model puts 2 de Mayo at 46%, the draw at 29% and Club Sp. San Lorenzo at 25%, from expected goals of 1.32 and 0.91.
The league sets the starting point. Primera Division has produced over 2.5 goals in 39% of its matches, and that is where a team with no record of its own would sit.
Each side's own record. 2 de Mayo have 9 in 21 this season (3 of 10 at home), Club Sp. San Lorenzo 8 in 21 (4 of 10 away). Those records are pulled toward the league rate with the weight of about 24 matches — enough that two or three unusual games cannot swing a rating — giving 41% and 38%.
Last season still counts, briefly. With 21 and 21 games played this season, last season's rates are still blended in and fade out entirely by game 40 — the point at which our testing showed they stop adding accuracy. A single season is part luck, so each club's record is first pulled toward the league average by 34 games' weight. That moves the two figures to 36% and 38%.
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 38%.
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 39%, from expected goals of 1.32 for 2 de Mayo and 0.91 for Club Sp. San Lorenzo. Folding in 30% of that view gives 38%.
Calibration. Tested against 97,729 past matches, our ratings below 55% have run consistently too pessimistic — a figure in the high 30s, for instance, has come in about four points higher. So ratings in that range are lifted part-way back, giving 40%.
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 |
|---|---|---|---|---|
| 2 de Mayo | 21 | 43% | 19% | 48% |
| Club Sp. San Lorenzo | 21 | 38% | 24% | 43% |
More: 2 de Mayo season stats · Club Sp. San Lorenzo season stats · Primera Division table and form. Ratings are calibrated probabilities, not tips — a 60% call is expected to miss two times in five.