Napoli remain on course to stretch their unbeaten run in Serie A to nine games after taking a 2-1 lead into the break of this afternoon's clash against Cagliari.
The hosts took the lead in the 11th minute through Gonzalo Higuain, who latched onto Faouzi Ghoulam's long throw-in before running clear to slot the ball past the keeper.
On the half-hour mark, Gokhan Inler doubled Napoli's lead with a powerful drive from range that swerved into the bottom left corner of the net.
Víctor Ibarbo pulled a goal back for the visitors eight minutes later when he was picked out inside the box by Antonio Balzano to fire a strike past Rafael.