Chelsea loanee Juan Cuadrado was the hero for Juventus on a busy day of Serie A action, with Roma and Napoli also victorious.
Sampdoria scored a historic 1-0 derby victory against Genoa in Serie A's only match on Saturday.
Napoli goalkeeper Jose Reina's stoppage-time save helped secure a vital 2-1 victory for his side over Roma.
Roma closed the gap on Serie A leaders Juventus to seven points with a 3-1 win away to Inter Milan at San Siro.
Gonzalo Higuain scored twice as Juventus preserved their seven-point lead in Serie A with a 2-0 victory at 10-man Cagliari.
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.
Radja Nainggolan stole the show as Roma secured a Coppa Italia quarter-final place with a 4-0 win over Sampdoria on Thursday.
Fiorentina put a dent in Juventus' title charge with a 2-1 win at the Stadio Artemio Franchi.
Lorenzo Tonelli marked his belated Napoli debut with a goal deep into stoppage time to secure a 2-1 win over 10-man Sampdoria.
Roma bounced back from their Serie A defeat to Juventus at the weekend by coming from behind to beat Chievo 3-1.
Joe Hart conceded five goals on Sunday afternoon as Torino lost 5-3 to Napoli in a thrilling Serie A encounter.
A rare goal from Kevin Strootman helped Roma reclaim second place in the Serie A table as they beat derby rivals Lazio 2-0 on Sunday.
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.
Joe Hart was at fault for Mauro Icardi's first goal as Inter Milan beat Torino 2-1 in Serie A on Wednesday.
A brilliant strike by teenager Manuel Locatelli fired Milan to a hard-earned 1-0 win over Serie A leaders Juventus at San Siro.
Two goals from Paulo Dybala helped Juventus strengthen their lead at the top of Serie A with a 2-1 win over Udinese on Saturday.