J2 League · Saturday, 5 September 2026. Final score 1–3 (half-time 1–2). Rebuilt from the season as it stood that morning, our rating would have been 43% for over 2.5 goals. This match is older than our frozen ratings ledger, which keeps 30 days, so that figure is a reconstruction from pre-match data rather than a number we published at the time — a distinction worth making, because only the frozen ones prove what we actually said beforehand.
Open this match in the app →| Market | Yes | No | Our call |
|---|---|---|---|
| Over 2.5 goals | 43% | 57% | Under |
| Over 3.5 goals | 24% | 76% | no pick |
| Both teams to score | 49% | 51% | No |
The result model puts Shonan Bellmare at 38%, the draw at 31% and Vegalta Sendai at 31%, from expected goals of 1.12 and 0.97.
The league sets the starting point. J2 League has produced over 2.5 goals in 46% of its matches, and that is where a team with no record of its own would sit.
Each side's own record. Shonan Bellmare have 1 in 4 this season (0 of 1 at home), Vegalta Sendai 1 in 4 (0 of 2 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 43% and 43%.
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 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 43% and 41%.
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 43%.
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 35%, from expected goals of 1.12 for Shonan Bellmare and 0.97 for Vegalta Sendai. Folding in 30% of that view gives 40%.
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 43%.
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 |
|---|---|---|---|---|
| Shonan Bellmare | 4 | 25% | 25% | 25% |
| Vegalta Sendai | 4 | 25% | 25% | 25% |
More: Shonan Bellmare season stats · Vegalta Sendai season stats · J2 League table and form. Ratings are calibrated probabilities, not tips — a 60% call is expected to miss two times in five.