1. Deild · Friday, 3 July 2026. Final score 2–1 (half-time 2–1). Rebuilt from the season as it stood that morning, our rating would have been 74% 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 | 74% | 26% | Over |
| Over 3.5 goals | 49% | 51% | Over |
| Both teams to score | 72% | 28% | Yes |
The result model puts Grotta at 32%, the draw at 21% and HK Kopavogur at 47%, from expected goals of 1.81 and 2.19.
The league sets the starting point. 1. Deild has produced over 2.5 goals in 70% of its matches, and that is where a team with no record of its own would sit.
Each side's own record. Grotta have 9 in 10 this season (4 of 4 at home), HK Kopavogur 7 in 11 (3 of 5 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 76% and 68%.
Last season still counts, briefly. With 10 and 11 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 76% and 73%.
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 74%.
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 76%, from expected goals of 1.81 for Grotta and 2.19 for HK Kopavogur. Folding in 30% of that view gives 74%.
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 |
|---|---|---|---|---|
| Grotta | 10 | 90% | 60% | 90% |
| HK Kopavogur | 11 | 64% | 45% | 64% |
More: Grotta season stats · HK Kopavogur season stats · 1. Deild table and form. Ratings are calibrated probabilities, not tips — a 60% call is expected to miss two times in five.