Inter Milan returned to the top of Serie A with a comfortable 4-0 home win over Frosinone on Sunday evening.
Fiorentina returned to the Serie A summit with victory at Sampdoria on Sunday, while Lazio lost to Roma in the Rome derby.
Fiorentina claimed a handsome 4-1 victory over Frosinone at the Stadio Artemio Franchi to move top of Serie A.
Inter Milan missed the chance to go top of Serie A after being held to a 1-1 draw at Palermo on Saturday.
Gonzalo Higuain's goal saw Napoli beat Serie A leaders Fiorentina 2-1, while Lazio were beaten 2-1 by Sassuolo.
Red-hot Fiorentina replaced Inter Milan as Serie A leaders by cruising to a 3-0 home victory over Atalanta on Sunday.