Fiorentina vs Atalanta
Our model puts a Fiorentina win at 39.2% in this Serie A fixture — close to a three-way split. Expected goals run 1.32 to 1.21.
What this probability has been worth
A number is worth what it has been worth. Across 2,324 predictions published before kick-off and scored against the result afterwards, the calls we priced between 35% and 45% came in 38.3% of the time — 853 fixtures in that band. The model claimed 40.6%, so the two are within 2.3 points of each other. In this range the stated probability has meant roughly what it says.
Where we disagree with the market
Bookmakers price Fiorentina at 2.2, which implies about 45.5%. Our model has it at 39.2% — 6.3 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, Atalanta's attack should find room against Fiorentina's defence, by 129 points. That is the mechanism behind the expected-goals line rather than a separate opinion about it.
Atalanta are off their season peak
Atalanta peaked at 1791 this season and sit at 1720 today, 71 points below their own best. Measuring a side against itself rather than against the table is often the earlier signal, and it is not visible in a league position.