League Two · Saturday, 26 September 2026. Final score 2–1 (half-time 2–0). Before kick-off we rated it 52% under 2.5 goals — the match finished with 3, 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 | 50% | 50% | no pick |
| Over 3.5 goals | 30% | 70% | no pick |
| Both teams to score | 55% | 45% | Yes |
The result model puts Cheltenham at 33%, the draw at 25% and Chesterfield at 41%, from expected goals of 1.39 and 1.58.
The league sets the starting point. League Two has produced over 2.5 goals in 48% of its matches, and that is where a team with no record of its own would sit.
Each side's own record. Cheltenham have 6 in 7 this season (3 of 3 at home), Chesterfield 3 in 7 (2 of 3 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 56% and 46%.
Last season still counts, briefly. With 7 and 7 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 49% and 46%.
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 47%.
Head to head. These sides have met 4 times in three years, producing over 2.5 goals in 0%. 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 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 57%, from expected goals of 1.39 for Cheltenham and 1.58 for Chesterfield. Folding in 30% of that view gives 49%.
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 50%.
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 |
|---|---|---|---|---|
| Cheltenham | 7 | 86% | 57% | 100% |
| Chesterfield | 7 | 43% | 14% | 57% |
More: Cheltenham season stats · Chesterfield season stats · League Two table and form. Ratings are calibrated probabilities, not tips — a 60% call is expected to miss two times in five.