Challenge League · Friday, 7 August 2026. Final score 2–1 (half-time 1–0). Before kick-off we rated it 57% over 2.5 goals — the match finished with 3, 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 | 55% | 45% | Over |
| Over 3.5 goals | 32% | 68% | no pick |
| Both teams to score | 59% | 41% | Yes |
The result model puts FC Aarau at 73%, the draw at 19% and Stade Nyonnais at 8%, from expected goals of 2.02 and 0.52.
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 Aarau have 1 in 2 this season (0 of 1 at home), Stade Nyonnais 1 in 2 (0 of 1 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 59% and 59%.
Last season still counts, briefly. With 2 and 2 games played this season, last season's rates are still blended in and fade out entirely by game 14 — the point at which our testing showed they stop adding accuracy. That moves the two figures to 68% and 47%.
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 58%.
Head to head. These sides have met 12 times in three years, producing over 2.5 goals in 58%. 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 58%.
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 2.02 for FC Aarau and 0.52 for Stade Nyonnais. Folding in 30% of that view gives 55%.
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 Aarau | 2 | 50% | 0% | 50% |
| Stade Nyonnais | 2 | 50% | 0% | 50% |
More: FC Aarau season stats · Stade Nyonnais season stats · Challenge League table and form. Ratings are calibrated probabilities, not tips — a 60% call is expected to miss two times in five.