Match ends, Napoli 2, Roma 0.
Rafael Benitez's Napoli went third in Serie A with victory over Roma.
Gonzalo Higuain gave the hosts an early lead with an acrobatic volley from six yards following Lorenzo Insigne's deflected shot.
Roma, who started the day as joint leaders with Juventus, had chances but Alessandro Florenzi shot wide and also had a shot saved by Rafael Cabral.
But Jose Callejon sealed the win when he collected Higuain's pass and fired past goalkeeper Morgan De Sanctis.
It was a deserved victory for Benitez's team, who saw Callejon and Marek Hamsik hit the woodwork, while Callejon also had an effort cleared off the goalline.
The defeat means Roma have now only won two of their past seven matches in all competitions and they are away at German champions Bayern Munich in a vital Champions League tie on Wednesday.
Spanish striker Callejon, Serie A's top goalscorer this season, grabbed his eighth league goal in 10 matches as Napoli clinched their third successive home league win.
The 27-year-old will be hoping to receive his first international cap later this month when his country play a Euro 2016 qualifier against Belarus on 15 November and a friendly against world champions Germany three days later.
- 11MaggioBooked at 40mins
- 19López SilvaBooked at 68minsSubstituted forInlerat 80'minutes
- 17HamsikSubstituted forGarganoat 66'minutes
- 24InsigneSubstituted forMertensat 72'minutes
- 4Adriano Buss
- 6de Guzmán
- 21Perez Cuesta
- 26De Sanctis
- 35TorosidisSubstituted forLjajicat 84'minutes
- 25HolebasBooked at 26mins
- 4NainggolanBooked at 73mins
- 24FlorenziBooked at 42minsSubstituted forIturbeat 64'minutes
- 10TottiSubstituted forDestroat 65'minutes
- 16De Rossi
- Paolo Tagliavento
- Shots on Target
Second Half ends, Napoli 2, Roma 0.
Foul by Miralem Pjanic (Roma).
Walter Gargano (Napoli) wins a free kick in the defensive half.
Mapou Yanga-Mbiwa (Roma) wins a free kick in the defensive half.
Foul by Gonzalo Higuaín (Napoli).
Attempt blocked. Radja Nainggolan (Roma) right footed shot from outside the box is blocked.
Seydou Keita (Roma) wins a free kick in the attacking half.
Foul by Raúl Albiol (Napoli).
José Holebas (Roma) wins a free kick in the defensive half.
Foul by Dries Mertens (Napoli).
Foul by Adem Ljajic (Roma).
Gökhan Inler (Napoli) wins a free kick in the defensive half.
Foul by Seydou Keita (Roma).
Dries Mertens (Napoli) wins a free kick on the left wing.
Goal! Napoli 2, Roma 0. José Callejón (Napoli) right footed shot from the centre of the box to the bottom left corner. Assisted by Gonzalo Higuaín.
Substitution, Roma. Adem Ljajic replaces Vasilis Torosidis.
Juan Iturbe (Roma) wins a free kick in the defensive half.
Foul by Faouzi Ghoulam (Napoli).
Attempt missed. José Holebas (Roma) right footed shot from outside the box is high and wide to the right following a set piece situation.