Sampdoria sit top of the table after they continued their stunning start to the season with a 4-1 home defeat of Siena. First-half goals from Angelo Palombo and Daniele Mannini set the hosts on their way and substitute Marco Padalino made an immediate impact to bag the third three minutes after the break.
Michele Fini pulled one back for the visitors midway through the second half, but Padalino soon restored his team's three-goal cushion as the Blucerchiati posted their fourth straight win to extend their 100 per cent start. Superior goal difference leaves Sampdoria in top spot ahead of Juventus, who also have 12 points from four games after beating Livorno 2-0 yesterday.
Inter Milan sit third, two points further back, thanks to a quickfire double from Argentina striker Diego Milito in a 2-1 win at Cagliari. Jose Mourinho's side were slow out of the blocks after their goalless UEFA Champions League draw with Barcelona in midweek and Cagliari took advantage with Jeda scoring only the second goal of the Sardinians' season with a 16th-minute penalty.
However, Inter displayed their character and two goals in four second-half minutes from Milito, who was signed from Genoa this summer, helped the Nerazzurri record their third win from four games.
Inter leapfrog Genoa in the table after they fell to a 3-1 defeat at Chievo. Genoa's first defeat of the season came as two Chievo goals in the first seven minutes proved their undoing.
Michele Marcolini put Chievo ahead from the penalty spot in the fifth minute, and they doubled their lead through Erjon Bogdani. Sergio Floccari got one back in the 65th minute, but Sergio Pellissier soon restored Chievo's two-goal advantage. Floccari had a late chance to make things interesting from the penalty spot, but had his effort saved.
Christian Zaccardo scored the only goal to give Parma coach Francesco Guidolin a 1-0 win over his old club Palermo. Guidolin guided the Sicilian side into the top flight during his time in charge, then took them into the UEFA Cup, but it was his current side that came away with their second win of the season at the Stadio Ennio Tardini.
AC Milan left it late to pick up their second win of the season with a narrow 1-0 victory over a defensive Bologna at the San Siro. Clarence Seedorf grabbed the winner in the 75th minute after Bologna had held firm against Milan's steady, yet rarely convincing, attacks.
The performance indicated that Milan are still short of their top form, but the result at least takes them back in the right direction after picking up just one point in their last two Serie A matches.
Bari poured misery on struggling Atalanta by handing out a sound 4-1 defeat. Emmanuel Rivas and Paulo Vito Barreto grabbed two goals in the space of three minutes early in the game and Edgar Alvarez made it 3-0 six minutes before the break.
Bari could have had more as Barreto missed a penalty early in the second half, so it fell to former Atalanta player Massimo Donati to do the damage to his former club just after the hour mark, with Gianpaolo Bellini's late strike for Atalanta scant consolation for a club still seeking their first points of the season.
Catania earned their first point of the season in a 1-1 draw against Lazio. Substitute Julio Cruz's 57th-minute equaliser for the Rome club cancelled out Jorge Martinez's first-half opener for the hosts.