FA WSL (W) · Sunday, 4 October 2026. Final score 0–3 (half-time 0–1). Before kick-off we rated it 58% 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 | 58% | 42% | Over |
| Over 3.5 goals | 39% | 61% | no pick |
| Both teams to score | 54% | 46% | Yes |
The result model puts West Ham W at 12%, the draw at 16% and Chelsea W at 72%, from expected goals of 0.97 and 2.62.
The league sets the starting point. FA WSL (W) has produced over 2.5 goals in 54% of its matches, and that is where a team with no record of its own would sit.
Each side's own record. West Ham W have 3 in 4 this season (1 of 2 at home), Chelsea W 1 in 4 (1 of 1 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 57% and 50%.
Last season still counts, briefly. With 4 and 4 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 51%.
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 53%.
Head to head. These sides have met 6 times in three years, producing over 2.5 goals in 67%. 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 54%.
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 69%, from expected goals of 0.97 for West Ham W and 2.62 for Chelsea W. Folding in 30% of that view gives 58%.
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 |
|---|---|---|---|---|
| West Ham W | 4 | 75% | 25% | 75% |
| Chelsea W | 4 | 25% | 25% | 25% |
More: West Ham W season stats · Chelsea W season stats · FA WSL (W) table and form. Ratings are calibrated probabilities, not tips — a 60% call is expected to miss two times in five.