Over/Under 2.5 accuracy
How often what we forecast on over/under 2.5 matches what actually happened, published unedited — the same numbers the overview shows, just this market alone.
In one sentence
Across 58,226 held-out matches, we are well calibrated on over/under 2.5, an average gap of -0.0pp between what we said and what happened. The chart below shows each probability band against how often it actually came in.
58,226 matches · model 20260928-1724
What we said, against what happened
Each dot is a tenth of the probability range: what we said, against how often it happened. On the dashed line we were exactly right; above it we were too cautious, below it too confident. The rule through each dot is one standard error, and the dot's area is how many matches it rests on — the sparse ones at the ends will always scatter.
Furthest out: when we said 13%, it happened 0% of the time, across 2 matches.
All 5 gate values for this market, unedited
| Gate | Value | Result |
|---|---|---|
| ece over under 2 5 | 0.0020 | pass |
| max reliability gap pp over under 2 5 | — | not evaluated |
| max reliability gap pp over under 2 5 measurable | 2.5369 | pass |
| reliability within sampling envelope over under 2 5 | 2.5369 | pass |
| brier over under 2 5 | 0.2457 | pass |
Common questions
How accurate are your over/under predictions?
Our over 2.5 and under 2.5 forecasts are scored the same way as the match result: we publish what we said against what actually happened, and the summary states the verdict in plain language. The two-way markets are judged with Brier score rather than ranked probability score, because that is the honest metric for a two-outcome call.