Napoli moved up to second in the Serie A table with a 2-0 home victory over strugglers Genoa.
Juan Cuadrado's thunderbolt gave Juventus 1-0 home win over Inter Milan on Sunday, as Sampdoria beat AC Milan and Lazio hit six.
Gonzalo Higuain reached 15 goals for the Serie A season as Juventus reinforced their position as leaders with a 2-0 win over Sassuolo.
Paulo Dybala and Gonzalo Higuain scored as Serie A leaders Juventus beat fourth-placed Lazio 2-0 on Sunday.
Fiorentina put a dent in Juventus' title charge with a 2-1 win at the Stadio Artemio Franchi.
Serie A leaders Juventus returned from their winter break with a 3-0 dismantling of Bologna on Sunday night.
Adel Taarabt has joined Genoa on an 18-month loan in a bid to rejuvenate his career.
Juventus have signed midfielder Tomas Rincon from Serie A rivals Genoa on a three-and-a-half-year deal.
Roma bounced back from their Serie A defeat to Juventus at the weekend by coming from behind to beat Chievo 3-1.
A spectacular volley from Danilo in the third minute of added time earned Udinese a last-gasp 1-0 win at home to Bologna
Giovanni Simeone scored twice as Genoa inflicted a 3-1 defeat on reigning champions and Serie A leaders Juventus on Sunday.
Roma lost further ground on Serie A leaders Juventus when they were sunk by a late penalty and lost 2-1 at Atalanta.
Juventus maintained their four-point lead at the top of the Serie A table after Miralem Pjanic struck a late winner at Chievo.
Roma were unable to keep pace with Serie A leaders Juventus after they were held to a goalless draw at struggling Empoli.
A brilliant strike by teenager Manuel Locatelli fired Milan to a hard-earned 1-0 win over Serie A leaders Juventus at San Siro.
Juventus moved for points clear at the top of Serie A after a 3-0 victory at Empoli, while Napoli slipped up at Atalanta.
Inter Milan were held to a 1-1 draw at home by Bologna in Serie A on Sunday after a fine volley from Ivan Perisic.
Mauro Icardi inspired a superb comeback win for Inter as they beat Juventus 2-1 on Sunday, while Roma lost at Fiorentina.
Andrea Belotti scored a hat-trick and missed a penalty as Torino cruised to a 5-1 victory over Bologna in Serie A.
Inter Milan suffered a surprise 2-0 defeat to Chievo on the opening weekend of Serie A while Napoli also struggled.