Match ends, Napoli 1, Roma 3.
Edin Dzeko scored twice as Roma handed Napoli their first home defeat since May 2015 to move above them into second place in Serie A.
Former Manchester City striker Dzeko has now scored seven times this season to become the league's leading scorer.
Dzeko, 30, slotted Roma ahead following a mistake by Kalidou Koulibaly and made it 2-0 when he headed in following a 54th-minute free-kick.
Koulibaly headed a goal back but Mohamed Salah sealed victory late on.
Can still do better
Edin Dzeko has enjoyed a superb start to the season.
After scoring just eight league goals last season, the Bosnia and Herzegovina international has seven in eight games this time around.
But Roma coach Luciano Spalletti believes he could have added even further to his tally in the fixture known as the 'Derby del Sole'.
Spalletti said: "He scored twice, but if you ask me he can score more if he just showed a little more fighting spirit, and was more clinical.
"In the opening half he had four or five chances to hurt Napoli. For a player with his physical and technical skills, he can do much better."
- 5AllanBooked at 85mins
- 17HamsikSubstituted forZielinskiat 81'minutes
- 7CallejónSubstituted forEl Kaddouriat 76'minutes
- 23GabbiadiniSubstituted forMertensat 56'minutesBooked at 53mins
- 77El Kaddouri
- 3Nunes JesusBooked at 50minsSubstituted forEmersonat 71'minutes
- 5ParedesBooked at 45mins
- 16De Rossi
- 4NainggolanSubstituted forEl Shaarawyat 79'minutes
- 8PerottiSubstituted forSantos da Silvaat 90+1'minutes
- 9DzekoBooked at 83mins
- 30Santos da Silva
- 92El Shaarawy
- Daniele Orsato
- Shots on Target
Second Half ends, Napoli 1, Roma 3.
Attempt missed. Stephan El Shaarawy (Roma) right footed shot from outside the box is too high following a fast break.
Lorenzo Insigne (Napoli) wins a free kick in the defensive half.
Foul by Edin Dzeko (Roma).
Substitution, Roma. Gerson replaces Diego Perotti.
Attempt missed. Jorginho (Napoli) right footed shot from the centre of the box is too high.
Attempt saved. Stephan El Shaarawy (Roma) right footed shot from the centre of the box is saved in the bottom right corner. Assisted by Mohamed Salah.
Corner, Napoli. Conceded by Edin Dzeko.
Corner, Napoli. Conceded by Federico Fazio.
Attempt saved. Dries Mertens (Napoli) right footed shot from outside the box is saved in the top right corner. Assisted by Jorginho.
Goal! Napoli 1, Roma 3. Mohamed Salah (Roma) left footed shot from the centre of the box to the bottom left corner. Assisted by Daniele De Rossi with a through ball.
Allan (Napoli) is shown the yellow card for a bad foul.
Foul by Allan (Napoli).
Edin Dzeko (Roma) wins a free kick on the right wing.
Delay over. They are ready to continue.
Delay in match Kalidou Koulibaly (Napoli) because of an injury.
Edin Dzeko (Roma) is shown the yellow card for a bad foul.
Kalidou Koulibaly (Napoli) wins a free kick in the defensive half.
Foul by Edin Dzeko (Roma).