Challenge League · Monday, 31 August 2026. Final score 2–2 (half-time 0–2). Rebuilt from the season as it stood that morning, our rating would have been 61% 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 | 61% | 39% | Over |
| Over 3.5 goals | 39% | 61% | no pick |
| Both teams to score | 60% | 40% | Yes |
The result model puts FC WIL 1900 at 25%, the draw at 22% and FC Aarau at 53%, from expected goals of 1.31 and 2.01.
The league sets the starting point. Challenge League has produced over 2.5 goals in 61% of its matches, and that is where a team with no record of its own would sit.
Each side's own record. FC WIL 1900 have 3 in 5 this season (1 of 2 at home), FC Aarau 4 in 5 (2 of 2 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 61% and 64%.
Last season still counts, briefly. With 5 and 5 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 55% and 65%.
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 60%.
Head to head. These sides have met 12 times in three years, producing over 2.5 goals in 58%. 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 60%.
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 65%, from expected goals of 1.31 for FC WIL 1900 and 2.01 for FC Aarau. Folding in 30% of that view gives 61%.
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 |
|---|---|---|---|---|
| FC WIL 1900 | 5 | 60% | 40% | 60% |
| FC Aarau | 5 | 80% | 0% | 80% |
More: FC WIL 1900 season stats · FC Aarau season stats · Challenge League table and form. Ratings are calibrated probabilities, not tips — a 60% call is expected to miss two times in five.