Norwich City vs Portsmouth
Our model puts a Norwich City win at 45.2% in this Championship fixture — a moderate lean. Expected goals run 1.55 to 1.2.
What this probability has been worth
A number is worth what it has been worth. Across 1,941 predictions published before kick-off and scored against the result afterwards, the calls we priced between 45% and 55% came in 47% of the time — 596 fixtures in that band. The model claimed 49.5%, so the two are within 2.5 points of each other. In this range the stated probability has meant roughly what it says.
Where we disagree with the market
Bookmakers price Norwich City at 1.77, which implies about 56.5%. Our model has it at 45.2% — 11.3 points lower. That is a wide gap, and it is worth being plain about what it means: it is not a claim that the price is wrong and we are right. It means two methods that usually agree have landed far apart on this one, and only the result will say which of them read it better.
Attack against defence
The single rating hides where the mismatch actually sits. Splitting it, Norwich City's attack should find room against Portsmouth's defence, by 101 points. That is the mechanism behind the expected-goals line rather than a separate opinion about it.
Early or late
70.6% of Portsmouth's goals have come after the break, against 56.2% for the sides we measure, over 17 goals. A side that scores this late is usually one that grows into matches or finishes them stronger than it starts — and one whose half-time score says less than usual about the result.