Napoli were crushed 3-0 by Atalanta after a series of defensive howlers allowed German Denis a brace.
Antonio Di Natale and Nico Lopez revived Udinese’s fortunes with a 2-0 victory away to Bologna.
Fourth-placed Fiorentina fell to a surprise defeat in Cagliari thanks to Mauricio Pinilla’s penalty.
Catania fought back from a goal down three times to hold Livorno 3-3 in a thrilling encounter, but a point apiece does nobody good.
A magnificent performance from 18-year-old Keita Balde took Lazio to victory against Chievo.
Maxi Lopez’s first half goal was enough to give Sampdoria a hard-fought 1-0 win over their city rivals Genoa.
Juventus resumed their victory march by sweeping Inter aside 3-1 with an inspirational Andrea Pirlo pulling the strings.
Adil Rami’s debut Serie A goal cancelled out Ciro Immobile as Milan were held to a 1-1 draw by Torino.
Roma thrashed Parma 4-2 in a tie originally rained off in February and closed the gap on Juventus to just eight points.
Verona ruined Alberto Malesani’s Sassuolo debut with a 2-1 victory at the Mapei Stadium.