Napoli extended their unbeaten run in Serie A to 10 games with a 2-1 victory over AC Milan at San Siro.
Maurizio Sarri's side stormed out of the blocks and were two goals up within the opening nine minutes.
Lorenzo Insigne finished off a swift Napoli counter-attack on six minutes before Jose Callejon swept home from a tight angle moments later.
The Rossoneri secured a route back into the game seven minutes before half-time when Juraj Kucka scored from 15 yards.
Mario Pasalic then headed against the bar moments after half-time as AC Milan looked to maintain their own slim title hopes.
Third-placed Napoli, though, held on to move within a point of leaders Juventus, who have two games in hand.