Napoli 0-0 Inter MilanLeaders Inter Milan were held to a goalless draw by Napoli, meaning their lead at the end of the weekend stands at seven points over Roma.
Hosts Napoli had enough chances to win several games and struck the woodwork twice - via Marek Hamsik and Fabio Quagliarella - on a frustrating night against the defending champions.
Inter also hit the frame of the goal through Sulley Muntari and improved in the second half to claim a point.
As a result of their point, Napoli move back up to fourth and keep their hopes of qualifying for next season's Champions League alive.
AS Roma 4-1 PalermoOn Saturday, Roma moved back up to second place in the table with an emphatic 4-1 victory over Palermo.
Having dropped down the standings after AC Milan beat Udinese on Friday night, Roma wasted no time in taking second spot back.
A Cesare Bovo own goal in the 33rd minute set them on their way to victory with a scoreline that was far more convincing than their performance at the Stadio Olimpico.
Julio Baptista added the second in the 53rd minute before Matteo Brighi got his name on the scoresheet 10 minutes later.
Fabrizio Miccoli reduced the arrears with a dubious penalty in the 80th minute but a stunning strike from John-Arne Riise three minutes later secured the win for Claudio Ranieri's in-form Giallorossi.
AC Milan 3-2 UdineseRonaldinho inspired AC Milan to a 3-2 victory over Udinese, warming them up for the visit of Manchester United in the Champions League on Tuesday with three more Serie A points.
Although the Brazilian did not put his own name on the scoresheet, he set up all three goals.
Klaas-Jan Huntelaar scored the first after seven minutes and substitute Alexandre Pato added the second five minutes before the break.
Antonio Floro Flores gave Udinese hope with a goal on the stroke of half-time before Huntelaar's second in the 57th minute restored the home side's two-goal advantage.
Antonio Di Natale pulled Udinese back into the game in the 86th minute, but they could not find an equaliser.
Sampdoria 2-0 FiorentinaSampdoria gabbed their fourth win as they downed an out-of-sorts Fiorentina 2-0.
Franco Semioli put the Blucerchiati on their way to victory in the 16th minute and Giampaolo Pazzini sealed the win in the 40th minute with his first goal against his former club.
Fiorentina are languishing in 11th position and struggling for form ahead of a testing Champions League tie against Bayern Munich on Wednesday.
Juventus 3-2 GenoaA disputed penalty allowed Juventus to win their first game under coach Alberto Zaccheroni as they came from behind to earn a 3-2 victory against Genoa.
Genoa went ahead with a goal from captain Marco Rossi in the 16th minute, but Amauri brought the Bianconeri level shortly before the break.
Alessandro Del Piero put the home team in front after an hour, but Rossi struck back immediately with an equaliser Genoa more than deserved.
However, the game was decided in the 78th minute by a penalty earned and converted by Del Piero, although doubts remain whether it should have been a spot-kick in the first place.
Italian Serie A Top Six Standings
Team Pl W D L Fr Ag Pts Inter Milan 24 16-6-2 49:20 54 Roma 24 14-5-5 42:27 47 AC Milan 23 13-6-4 39:24 45 Napoli 24 10-9-5 32:27 39 Sampdoria 24 11-6-7 32:31 39 Juventus 24 11-5-8 38:32 38