Primera Division · Tuesday, 1 September 2026 · 21:00. Final score 1–0 (half-time 0–0). Before kick-off we rated it 58% under 2.5 goals — the match finished with 1, 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 | 42% | 58% | Under |
| Over 3.5 goals | 22% | 78% | no pick |
| Both teams to score | 52% | 48% | no pick |
The result model puts Atletico Grau at 32%, the draw at 31% and FBC Melgar at 37%, from expected goals of 0.96 and 1.05.
| Market | Price | Implied | Our rating | Edge |
|---|---|---|---|---|
| Over 2.5 goals | 2.20 | 43% | 42% | -1% |
| Under 2.5 goals | 1.65 | 57% | 58% | +1% |
| Both teams to score | 1.83 | 50% | 52% | +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: Atletico Grau 2.50, draw 3.10, FBC Melgar 2.75.
The league sets the starting point. Primera Division has produced over 2.5 goals in 51% of its matches, and that is where a team with no record of its own would sit.
Each side's own record. Atletico Grau have 7 in 23 this season (4 of 11 at home), FBC Melgar 14 in 23 (6 of 11 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 42% and 55%.
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 49%.
Head to head. These sides have met 5 times in three years, producing over 2.5 goals in 20%. 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 46%.
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 33%, from expected goals of 0.96 for Atletico Grau and 1.05 for FBC Melgar. Folding in 30% of that view gives 42%.
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 |
|---|---|---|---|---|
| Atletico Grau | 23 | 30% | 22% | 30% |
| FBC Melgar | 23 | 61% | 39% | 70% |
More: Atletico Grau season stats · FBC Melgar season stats · Primera Division table and form. Ratings are calibrated probabilities, not tips — a 60% call is expected to miss two times in five.