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.
In-form Inter Milan moved up to fourth in Serie A with a 3-0 success at home to bottom-of-the-table Pescara on Saturday.
Napoli extended their unbeaten run in Serie A to 10 games with a 2-1 victory over AC Milan at San Siro on Saturday.
Roma bounced back from their Serie A defeat to Juventus at the weekend by coming from behind to beat Chievo 3-1.