Serie A (W) · Sunday, 27 September 2026. Final score 1–3 (half-time 0–1). Before kick-off we rated it 54% under 2.5 goals — the match finished with 4, so that call missed. 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 | 47% | 53% | Under |
| Over 3.5 goals | 23% | 77% | no pick |
| Both teams to score | 44% | 56% | No |
The result model puts Sassuolo W at 13%, the draw at 24% and Roma W at 63%, from expected goals of 0.62 and 1.72.
The league sets the starting point. Serie A (W) has produced over 2.5 goals in 50% of its matches, and that is where a team with no record of its own would sit.
Each side's own record. Sassuolo W have 0 in 0 this season, Roma W 0 in 0. 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 50% and 50%.
Last season still counts, briefly. With 0 and 0 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 50% and 50%.
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 50%.
Head to head. These sides have met 8 times in three years, producing over 2.5 goals in 63%. 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 51%.
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 42%, from expected goals of 0.62 for Sassuolo W and 1.72 for Roma W. Folding in 30% of that view gives 48%.
Season opener. One of these sides has not played a league game yet. Openers run about 2.5 points under their league's norm, measured across 2,727 of them, so the rating is docked to 45%.
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 47%.
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 |
|---|---|---|---|---|
| Sassuolo W | 0 | — | — | — |
| Roma W | 0 | — | — | — |
More: Sassuolo W season stats · Roma W season stats · Serie A (W) table and form. Ratings are calibrated probabilities, not tips — a 60% call is expected to miss two times in five.