Superettan · Sunday, 20 September 2026. Final score 0–0 (half-time 0–0). Rebuilt from the season as it stood that morning, our rating would have been 53% for over 2.5 goals. This game was not captured by our pre-kick-off freeze, 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 | 53% | 47% | Over |
| Over 3.5 goals | 33% | 67% | no pick |
| Both teams to score | 57% | 43% | Yes |
The result model puts Helsingborg at 47%, the draw at 27% and Norrby IF at 26%, from expected goals of 1.49 and 1.05.
The league sets the starting point. Superettan has produced over 2.5 goals in 56% of its matches, and that is where a team with no record of its own would sit.
Each side's own record. Helsingborg have 15 in 24 this season (7 of 12 at home), Norrby IF 12 in 24 (4 of 12 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 59% and 53%.
Last season still counts, briefly. With 24 and 24 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 53%.
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 55%.
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 1.49 for Helsingborg and 1.05 for Norrby IF. Folding in 30% of that view gives 52%.
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 53%.
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 |
|---|---|---|---|---|
| Helsingborg | 24 | 63% | 42% | 71% |
| Norrby IF | 24 | 50% | 33% | 67% |
More: Helsingborg season stats · Norrby IF season stats · Superettan table and form. Ratings are calibrated probabilities, not tips — a 60% call is expected to miss two times in five.