Atalanta forward German Denis took advantage of shocking defending by Napoli to score twice in a 3-0 win over Rafael Benitez's exasperatingly inconsistent team on Sunday.
Argentina's injured captain Lionel Messi has been named in a squad missing the suspended Javier Mascherano and Gonzalo Higuain for next month's World Cup qualifier against South America's bottom side Paraguay.
A bizarre own goal briefly gave Serie A leaders Juventus the jitters, triggering memories of last week's dramatic collapse at Verona, before they recovered to beat lowly Chievo 3-1 on Sunday.
Brazil playmaker Kaka scored his first goal, a delightful curling shot, since his return to AC Milan at the start of the season but his struggling team were held 1-1 at home by Lazio in Serie A on Wednesday.
Juventus will end 2013 five points clear at the top of Serie A after a 4-1 victory at Atalanta stretched their winning league run to nine games on Sunday.
Carlos Tevez scored a stunning goal as Serie A leaders Juventus beat Torino 1-0 on Sunday to continue an extraordinary dominance of their neighbours.
First-half goals by Gervinho and Mattia Destro helped AS Roma strengthen their grip on second place in Serie A with a 2-0 win at Chievo Verona on Saturday.
Arturo Vidal's double helped Juventus to their 12th straight league win with a 4-2 triumph over Sampdoria and saw the Italian champions restore an eight-point lead at the top of Serie A.
New AC Milan coach Sinisa Mihajlovic is known for his hot temper and iron will and fans will hope those traits inspire rather than alienate his players as he bids to turn around the fortunes of Italy's fallen giants.
The Fernando Llorente and Carlos Tevez double act struck again on Sunday with both players scoring to give Juventus a 2-0 win at AC Milan which strengthened their grip on Serie A.
Juventus made light work of bitter rivals Inter Milan on Sunday, winning 3-1 to increase their Serie A lead to nine points after AS Roma were washed out and Napoli blundered to a 3-0 defeat at Atalanta.
Playmaker Kaka breathed new life into struggling AC Milan by scoring twice and 18-year-old Bryan Cristante claimed his first professional goal as they beat Atalanta 3-0 on Monday for only their fifth league win of the season.
AS Roma's lingering hopes of catching Serie A leaders Juventus were virtually extinguished after two stunning Pepe Reina saves kept them at bay and Jose Callejon's late goal handed third-placed Napoli a 1-0 home win on Sunday.
AS Roma moved clear at the top of Serie A after beating Sampdoria 2-0 on Wednesday as struggling AC Milan came back from 3-1 down to draw 3-3 in stoppage time at Bologna.