Roma matches best start in Serie A
Miralem Pjanic scored twice for the Giallorossi in the 1 vs. 2 clash.
First, the Bosnia midfielder found the net four minutes into first-half added time with a sublime free kick that went over Napoli's wall before dipping down into the top corner. Then he added a penalty in the 71st after Napoli captain Paolo Cannavaro was shown a red card for taking down Marco Borriello inside the area, leaving the visitors with 10 men.
Napoli wasted three close chances. Goran Pandev failed to finish with only the goalkeeper to beat and Lorenzo Insigne and Gokhan Inler each hit the post.
Former Napoli great Diego Maradona was in attendance but he had little to cheer for.
Roma matched Juventus, which also won eight consecutive matches to start the 1985-86 and 1930-31 seasons. The Bianconeri went on to win the Serie A title on both occasions.
Juventus also won nine straight in 2005-06 but its title that season was stripped in the ''calciopoli'' match-fixing scandal.
Roma moved five points ahead of Napoli and Juventus, which visits Fiorentina on Sunday.
Perhaps even more impressive than its record is Roma's goal differential, with 22 scored and one allowed.
Roma hasn't won the title since 2001.
The only negative moments for Roma came when captain Francesco Totti exited with an apparent right thigh muscle problem after a half hour and Gervinho went off with a similar injury in the second half.
While the Stadio Olimpico was not completely full, the atmosphere was electric.
When Maradona entered the stadium early in the first half, fans - both Napoli and Roma supporters - rushed past security to take his picture as he waved to the crowd.
Napoli started with its standout forward Gonzalo Higuain on the bench with a minor injury and Roma controlled the opening 20 minutes.
Daniele De Rossi and Pjanic threatened for Roma early on and just as Napoli began to assert itself, Totti went to the sideline.
Totti had his thigh massaged for a few minutes but then decided he couldn't come back on and walked down into the changing room as Borriello replaced him.
In the 35th, a through ball from Insigne set up Pandev with only Roma goalkeeper Morgan De Sanctis to beat but the Macedonia striker couldn't get his shot around De Sanctis, who played for Napoli the past four seasons. Despite De Sanctis' deflection, the ball still trickled toward the net but De Rossi cleared the danger just in time.
Ten minutes later, Napoli threatened again when Insigne wasted a great chance by hitting the outside of the post from five meters (yards).
Down at the other end, Gervinho earned the foul that set up the free kick for Pjanic's goal.
Napoli was again dangerous at the start of the second half with Inler hitting the outside of the post with a long shot in the 49th.
De Rossi nearly doubled the lead when his bouncing a header missed in the 58th and Higuain replaced Pandev in the 68th.
Two minutes after Higuain came on, Pjanic pounded his penalty into the back of the net and Napoli didn't have the will - or time - to recover from a two-goal deficit.