Napoli have lost ground on Serie A leaders Juventus with a 1-1 draw at 10-man AC Milan.
Mathieu Flamini put the hosts in front on 30 minutes when he latched onto a loose ball before firing into the bottom corner from 20 yards.
However, Napoli got themselves level three minutes later as Goran Pandev smashed in Marek Hamsik's cross from close range.
The visitors nearly took the lead a minute before the break, but Edinson Cavani's looping effort was tipped away by the outstretched Christian Abbiati.
Having scored the opening goal of the game, Flamini was shown a straight red card on 72 minutes for a reckless lunge on Juan Zuniga.
Despite their numerical advantage for the final stages of the match, Napoli's failure to find a winner means that Juventus sit nine points clear in the table with a game in hand.
