MLS · Thursday, 20 August 2026. Final score 3–1 (half-time 1–1). Rebuilt from the season as it stood that morning, our rating would have been 62% 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 | 62% | 38% | Over |
| Over 3.5 goals | 40% | 60% | no pick |
| Both teams to score | 62% | 38% | Yes |
The result model puts Portland Timbers at 36%, the draw at 24% and San Diego at 40%, from expected goals of 1.61 and 1.71.
The league sets the starting point. MLS has produced over 2.5 goals in 60% of its matches, and that is where a team with no record of its own would sit.
Each side's own record. Portland Timbers have 14 in 19 this season (8 of 9 at home), San Diego 11 in 19 (3 of 9 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 66% and 59%.
Last season still counts, briefly. With 19 and 19 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 61% and 60%.
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 60%.
Head to head. These sides have met 6 times in three years, producing over 2.5 goals in 83%. 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 61%.
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 64%, from expected goals of 1.61 for Portland Timbers and 1.71 for San Diego. Folding in 30% of that view gives 62%.
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 |
|---|---|---|---|---|
| Portland Timbers | 19 | 74% | 47% | 74% |
| San Diego | 19 | 58% | 42% | 53% |
More: Portland Timbers season stats · San Diego season stats · MLS table and form. Ratings are calibrated probabilities, not tips — a 60% call is expected to miss two times in five.