In Genoa, Goran Pandev scored twice against his former club Napoli to continue a revival since the return of coach Davide Ballardini.
Napoli whipped Genoa 6-0 in the reverse fixture, but were struggling without defensive duo Kalidou Koulibaly and Faouzi Ghoulam, who tested positive for coronavirus, with forward Dries Mertens out injured.
The hosts took advantage of holes in the Napoli defence with Milan Badelj setting up Pandev for the opener after 11 minutes. Hirving Lozano and Andrea Petagna missed chances before Pandev struck again, finishing off a Miha Zajc cross 15 minutes later.
Matteo Politano pulled a goal back for Napoli, beating Genoa goalkeeper Mattia Perin from an angle with 11 minutes to go.
The hosts held on for their third win on the trot to move up to 11th, with just one defeat in eight games, having been 19th after 13 games in late December when Ballardini took over.