Fabian Ruiz scored the first goal for Napoli in the 18th minute. Incinia then converted penalties in the 41st and 62nd minutes.
With this win, Napoli have 28 points from 10 matches. AC Milan also have the same number of points but Napoli are ahead of them in goal difference. Milan beat Torino 1-0 on Tuesday.
Bologna has been able to register only one win in the last six matches. He has 12 points from 10 matches and is in 12th place.