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.
Roma cruised to a 3-1 win against Udinese at the Stadio Olimpico to return to the top of Serie A.
Gianluigi Donnarumma made history on Sunday by becoming the youngest goalkeeper ever to start a match in Serie A.
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.
Mario Balotelli scored his first goal for AC Milan since returning to the club as the Rossoneri edged Udinese 3-2.
Two goals from Carlos Bacca helped Milan recover from last weekend's derby
defeat to Inter with a 3-2 win over Palermo at San Siro.
Mario Balotelli hit the post as AC Milan lost 1-0 to leaders Inter in Serie A on Sunday, while Torino remain unbeaten.
Serie A champions Juventus saw their 47-match unbeaten home league record come to an end against Udinese.
Defending champions Juventus suffered a shock 1-0 home defeat to Udinese in their Serie A opener on Sunday.
Striker Matej Vydra is back with Watford, this time on a permanent basis after signing a five-year deal to join the club from Udinese.
Juventus have exercised the option to buy Argentine Roberto Pereyra from Udinese, the Serie A champions have announced.
Andrea Stramaccioni will step down as Udinese head coach after just one year when his contract expires at the end of the June.
Cagliari drew a line under 11 years in Serie A by beating Udinese 4-3 in their last game before submitting to relegation.
Fiorentina qualified for the Europa League while Stephan El Shaarawy scored his first goal in seven months for AC Milan.
Liverpool give U21s more game time than Premier League rivals but top flight lags behind Europe.
Sassuolo defeated 10-man Udinese 1-0 on Sunday afternoon to continue their strong finish to the season.
Roma rallied from behind to beat Udinese 2-1 and return to second place in the Serie A table.