Napoli stretched their winning run to five games in all competitions to move back up to the top of the Serie A table with victory at AC Milan.
Giovanni Simeone headed a late winner as he directed Mario Rui’s cross into the bottom corner.
The visitors had opened the scoring through a Matteo Politano penalty before Olivier Giroud equalised with his fourth league goal of the season.
Napoli now sit at the top on goal difference, while Milan remain fifth.
Luciano Spalletti’s side were the third team to lead the table after the seventh round of fixtures in the Italian top flight.
Udinese briefly led after beating Inter Milan 3-1 earlier on Sunday, before Atalanta’s narrow 1-0 win at Roma saw them move to the summit in a game that saw Jose Mourinho sent off.
The Roma boss was shown a red card after venting his frustrations when the referee did not award his side a second-half penalty.