National League · Saturday, 22 August 2026 · 12:30. Our rating makes this 52% to go over 2.5 goals, so our lean is over. The National League average is 57%.
Open this match in the app →| Market | Yes | No | Our call |
|---|---|---|---|
| Over 2.5 goals | 52% | 48% | Over |
| Over 3.5 goals | 27% | 73% | no pick |
| Both teams to score | 57% | 43% | Yes |
The result model puts Boston United at 39%, the draw at 27% and Altrincham at 35%, from expected goals of 1.31 and 1.22.
| Market | Price | Implied | Our rating | Edge |
|---|---|---|---|---|
| Over 2.5 goals | 1.73 | 55% | 52% | -2% |
| Under 2.5 goals | 2.08 | 45% | 48% | +2% |
| Both teams to score | 1.67 | 56% | 57% | +1% |
Implied percentages have the bookmaker's margin removed, so they add to 100 and can be compared with our rating directly. Edge is simply the gap between the two. A positive edge means our model thinks the outcome is likelier than the price suggests — it is not a tip, and a high probability with a negative edge is a poor bet however safe it looks. Prices are a pre-match snapshot from a single bookmaker and move constantly.
Match odds: Boston United 1.85, draw 3.60, Altrincham 3.60.
The league sets the starting point. National League has produced over 2.5 goals in 57% of its matches, and that is where a team with no record of its own would sit.
Each side's own record. Boston United have 0 in 2 this season (0 of 1 at home), Altrincham 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 52% and 55%.
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 54% and 56%.
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 55%.
Head to head. These sides have met 4 times in three years, producing over 2.5 goals in 50%. 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 55%.
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 46%, from expected goals of 1.31 for Boston United and 1.22 for Altrincham. Folding in 30% of that view gives 52%.
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 |
|---|---|---|---|---|
| Boston United | 2 | 0% | 0% | 0% |
| Altrincham | 2 | 50% | 50% | 50% |
More: Boston United season stats · Altrincham season stats · National League table and form. Ratings are calibrated probabilities, not tips — a 60% call is expected to miss two times in five.