Taking the contrarian side here: despite AS Roma being the public favorite, the 11.4% overround and +510 best line on Fiorentina suggest inflated chalk pricing.

Market split of 70/16 across 1 books. Home advantage factors into the pricing.

Overround at 11.4% means books are taking a large cut — 5.7% per side on average. Factor in the vig before sizing this bet; the true edge is narrower than the raw numbers suggest.