FA Cup · Tuesday, 20 October 2026 · 19:45. Our rating makes this 57% to go over 2.5 goals, though we make no pick on this fixture — see below. The FA Cup average is 58%.
Open this match in the app →| Market | Yes | No | Our call |
|---|---|---|---|
| Over 2.5 goals | 57% | 43% | no pick |
| Over 3.5 goals | 34% | 66% | no pick |
| Both teams to score | 58% | 42% | no pick |
The result model puts Forest Green at 47%, the draw at 23% and Chesham United at 30%, from expected goals of 1.9 and 1.48.
The league sets the starting point. FA Cup has produced over 2.5 goals in 58% of its matches, and that is where a team with no record of its own would sit.
Each side's own record. Forest Green have 8 in 12 this season (6 of 7 at home), Chesham United 0 in 0. 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 61% and 58%.
Last season still counts, briefly. With 12 and 0 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 56% and 58%.
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 57%.
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 66%, from expected goals of 1.9 for Forest Green and 1.48 for Chesham United. Folding in 30% of that view gives 60%.
Season opener. One of these sides has not played a league game yet. Openers run about 2.5 points under their league's norm, measured across 2,727 of them, so the rating is docked to 57%.
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 |
|---|---|---|---|---|
| Forest Green | 12 | 67% | 42% | 67% |
| Chesham United | 0 | — | — | — |
More: Forest Green season stats · FA Cup fixtures. Ratings are calibrated probabilities, not tips — a 60% call is expected to miss two times in five.