Romelu Lukaku scored against his former club and Napoli beat struggling Roma 1-0 on Sunday to reclaim the Serie A lead and spoil Claudio Ranieri´s debut with the Giallorossi.
Napoli moved one point ahead of Atalanta, Inter Milan, Fiorentina and Lazio.
Fiorentina won 2-0 at Como for its seventh consecutive victory and Lazio beat 10-man Bologna 3-0.
Lukaku redirected in a cross from Napoli captain Giovanni Di Lorenzo early in the second half at the Stadio Diego Armando Maradona.
Roma had a chance to equalize but Artem Dovbyk´s header banged off the crossbar.
Lukaku played for Roma last season but was one of the main transfer targets when Antonio Conte was hired at Napoli for this season.