Premiership · Saturday, 8 August 2026. Final score 1–0 (half-time 0–0). Before kick-off we rated it 54% under 2.5 goals — the match finished with 1, 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 | 41% | 59% | Under |
| Over 3.5 goals | 24% | 76% | no pick |
| Both teams to score | 48% | 52% | No |
The result model puts ST Mirren at 32%, the draw at 31% and ST Johnstone at 38%, from expected goals of 0.94 and 1.06.
The league sets the starting point. Premiership has produced over 2.5 goals in 52% of its matches, and that is where a team with no record of its own would sit.
Each side's own record. ST Mirren have 0 in 1 this season, ST Johnstone 1 in 1. 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 51% and 54%.
Last season still counts, briefly. With 1 and 1 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 31% and 54%.
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 44%.
Head to head. These sides have met 6 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 45%.
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 32%, from expected goals of 0.94 for ST Mirren and 1.06 for ST Johnstone. Folding in 30% of that view gives 41%.
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 |
|---|---|---|---|---|
| ST Mirren | 1 | 0% | 0% | 0% |
| ST Johnstone | 1 | 100% | 100% | 100% |
More: ST Mirren season stats · ST Johnstone season stats · Premiership table and form. Ratings are calibrated probabilities, not tips — a 60% call is expected to miss two times in five.