First League · Monday, 17 August 2026 · 17:00. Our rating makes this 48% to go over 2.5 goals, so our lean is under. The First League average is 45%.
Open this match in the app →| Market | Yes | No | Our call |
|---|---|---|---|
| Over 2.5 goals | 48% | 52% | Under |
| Over 3.5 goals | 25% | 75% | no pick |
| Both teams to score | 46% | 54% | No |
The result model puts Spartak Varna at 53%, the draw at 25% and Septemvri Sofia at 23%, from expected goals of 1.64 and 0.99.
| Market | Price | Implied | Our rating | Edge |
|---|---|---|---|---|
| Over 2.5 goals | 2.08 | 45% | 48% | +3% |
| Under 2.5 goals | 1.73 | 55% | 52% | -3% |
| Both teams to score | 1.91 | 49% | 46% | -3% |
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: Spartak Varna 1.85, draw 3.50, Septemvri Sofia 4.20.
The league sets the starting point. First League has produced over 2.5 goals in 45% of its matches, and that is where a team with no record of its own would sit.
Each side's own record. Spartak Varna have 3 in 4 this season (1 of 2 at home), Septemvri Sofia 3 in 4 (2 of 2 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 48% and 51%.
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 14 — the point at which our testing showed they stop adding accuracy. That moves the two figures to 48% 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 48%.
Head to head. These sides have met 5 times in three years, producing over 2.5 goals in 40%. 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 48%.
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 49%, from expected goals of 1.64 for Spartak Varna and 0.99 for Septemvri Sofia. Folding in 30% of that view gives 48%.
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 |
|---|---|---|---|---|
| Spartak Varna | 4 | 75% | 50% | 50% |
| Septemvri Sofia | 4 | 75% | 0% | 50% |
More: Spartak Varna season stats · Septemvri Sofia season stats · First League table and form. Ratings are calibrated probabilities, not tips — a 60% call is expected to miss two times in five.