Piotr Zielinski and Lorenzo Insigne struck to earn Napoli a 2-1 win against Juventus, whose coach Maurizio Sarri was circumspect.
Piotr Zielinski and Lorenzo Insigne scored in the second half as Napoli beat Serie A champions Juventus 2-1 at home on Sunday.
Maurizio Sarri returns to his former club Napoli with Serie A leaders Juventus on Sunday, and the veteran boss has given a retirement hint.
Juventus' winning run has given Maurizio Sarri encouragement as he suggests they face their toughest title race in several seasons.
Juventus boss Maurizio Sarri has no worries about Cristiano Ronaldo playing three times in a week if he is at full fitness.
Any failings on Cristiano Ronaldo's part are made up for 100-fold, says Juventus coach Maurizio Sarri.
Paulo Dybala shone in Cristiano Ronaldo's absence in midweek but Maurizio Sarri has backed his star forwards to work well in tandem.
Barcelona captain Lionel Messi claimed a sixth Ballon d'Or in December, moving ahead of Juventus' Cristiano Ronaldo.
Gonzalo Higuain set Juventus on course for a 4-0 Coppa Italia win over Udinese with a stunning opener, created with help from Paulo Dybala.
Maurizio Sarri has no issues with Paulo Dybala's disappointment at being substituted during Juventus' 2-1 win at Roma.