Primera Division · Saturday, 31 October 2026 · 21:00 UK time. Our rating makes this 51% to go over 2.5 goals, so our lean is over. The Primera Division average is 52%.
Open this match in the app →| Market | Yes | No | Our call |
|---|---|---|---|
| Over 2.5 goals | 51% | 49% | Over |
| Over 3.5 goals | 27% | 73% | no pick |
| Both teams to score | 51% | 49% | Yes |
The result model puts Cusco at 65%, the draw at 22% and Sport Boys at 13%, from expected goals of 1.87 and 0.7.
The league sets the starting point. Primera Division has produced over 2.5 goals in 52% of its matches, and that is where a team with no record of its own would sit.
Each side's own record. Cusco have 18 in 29 this season (6 of 14 at home), Sport Boys 9 in 29 (5 of 14 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 58% and 41%.
Last season still counts, briefly. With 29 and 29 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 56% and 44%.
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 51%.
Head to head. These sides have met 5 times in three years, producing over 2.5 goals in 80%. That nudges the number 5% of the way toward the head-to-head pattern — deliberately small, because fixtures change more than reputations do — landing on 52%.
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 47%, from expected goals of 1.87 for Cusco and 0.7 for Sport Boys. Folding in 30% of that view gives 51%.
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 |
|---|---|---|---|---|
| Cusco | 29 | 62% | 28% | 66% |
| Sport Boys | 29 | 31% | 21% | 41% |
Our numbers give this match a 71% chance of at least one goal before half-time and 31% of two or more. The Primera Division rates, last season and this season combined, are 70% and 34% (this season so far: 69% with a first-half goal, from 262 games). After the break: 78% for a goal and 40% for two or more (league 78% and 44%). Cusco's last 50 games had a first-half goal 72% of the time and a second-half goal 84%; Sport Boys's last 50, 72% and 70%. A goal in both halves: 55% (league 55%). Highest-scoring half: second 46%, first 31%, level 23% — close to the league's usual split, because team form says little about which half is busier. Team form says less about a single half than about a full match, so these numbers stay close to the league's.
Every match ranked the same way: first half goals today · second half goals today · goal in both halves today · tomorrow.
More: Cusco season stats · Sport Boys season stats · Primera Division table and form. Ratings are calibrated probabilities, not tips — a 60% call is expected to miss two times in five.