J3 League · Saturday, 31 October 2026 · 07:00. Our rating makes this 49% to go over 2.5 goals, so our lean is under. The J3 League average is 48%.
| Market | Yes | No | Our call |
|---|---|---|---|
| Over 2.5 goals | 49% | 51% | Under |
| Over 3.5 goals | 26% | 74% | no pick |
| Both teams to score | 52% | 48% | Yes |
The result model puts Parceiro Nagano at 35%, the draw at 28% and Biwako Shiga at 37%, from expected goals of 1.2 and 1.23.
The league sets the starting point. J3 League 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. Parceiro Nagano have 5 in 12 this season (2 of 7 at home), Biwako Shiga 8 in 12 (5 of 6 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 46% and 55%.
Last season still counts, briefly. With 12 and 12 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 44% and 55%.
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 49%.
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 44%, from expected goals of 1.2 for Parceiro Nagano and 1.23 for Biwako Shiga. Folding in 30% of that view gives 48%.
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 49%.
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 |
|---|---|---|---|---|
| Parceiro Nagano | 12 | 42% | 25% | 58% |
| Biwako Shiga | 12 | 67% | 33% | 42% |
Our numbers give this match a 66% chance of at least one goal before half-time and 32% of two or more. The J3 League rates are 67% and 34%. After the break: 75% for a goal and 46% for two or more (league 76% and 42%). Parceiro Nagano's last 50 games had a first-half goal 66% of the time and a second-half goal 64%; Biwako Shiga's last 14, 64% and 86%. A goal in both halves: 46% (league 49%). Highest-scoring half: second 46%, first 30%, level 24% — close to the league's usual split, because team form says little about which half is busier. Team form says less about a single half than about a full match, so these numbers stay close to the league's.
Every match ranked the same way: first half goals today · second half goals today · goal in both halves today · tomorrow.
More: Parceiro Nagano season stats · Biwako Shiga season stats · J3 League table and form. Ratings are calibrated probabilities, not tips — a 60% call is expected to miss two times in five.