Internazionale maintained their seven-point cushion at the top of Serie A on Sunday with an enthralling 3-2 victory at Siena.
Zlatan Ibrahimovic scored from the spot to give the Milan club the lead but Massimo Maccarone brought the hosts back into the match.
Inter regained the advantage through Esteban Cambiasso on the stroke of half-time and Ibrahimovic then grabbed his second shortly after the restart.
A late strike from Fernando Forestieri ensured a nervy finish for the defending champions, but they clung on for their 14th win of the season.
Roma are still clinging to Inter's coat-tails thanks to a 2-1 victory at Atalanta.
Ferreira Pinto fired the hosts in front on 17 minutes before Francesco Totti equalised with a powerful free-kick seven minutes before the break.
Amantino Mancini put the Romans in front on the stroke of half-time and the Giallorossi held on to inflict a second home defeat of the season on Atalanta.
Alexandre Pato made an immediate impact as AC Milan stormed to a 5-2 victory against Napoli.
The Brazilian striker's debut did not disappoint, although it was his compatriot Ronaldo's first two goals of the season which ended Napoli's challenge.
He opened the scoring in the 16th minute, but the visitors reacted well and Roberto Sosa grabbed an equaliser in the 28th minute.
Clarence Seedorf restored Milan's lead three minutes later, but a penalty from Maurizio Domizzi saw Napoli go in at the break on level terms before the home side ran rampage in the second half.
Ronaldo and Kaka put the result beyond doubt before Pato added the icing in the 74th minute with his first goal for the Rossoneri.
Napoli's miserable evening was completed with the dismissal of Walter Gargano.
Rock-bottom Cagliari failed to make use of their numerical advantage as they fell to their fifth consecutive league defeat against 10-man Udinese.
New Rossoblu coach Davide Ballardini was hoping to get his reign off to the perfect start and when Felipe was sent off for the visitors after half an hour it looked like a shock result could be on the cards.
But Fabio Quagliarella put fourth-placed Udinese in front just two minutes later and, despite spells of intense pressure, Cagliari could not find the equaliser.
To add insult to injury, the hosts were also reduced to 10 men when Joaquin Larrivey was given his marching orders in the last minute.
Adrian Mutu came back to haunt former club Parma after his late penalty gave Fiorentina a well-deserved 2-1 win.
The Romania striker had put Fiorentina ahead two minutes before the break but Ferdinand Coly equalised for the home side midway through the second period.
However, with five minutes remaining Christian Vieri was bundled over in the box by Stefano Morrone and Mutu fired home the resulting penalty to give Fiorentina the win and keep them fifth.
Antonio Cassano inspired Sampdoria to a 3-0 win over Palermo.
The Samp striker created two goals - one each for Claudio Bellucci and Paolo Sammarco - before netting one himself late on, and fully deserved his standing ovation as he left the field five minutes before the end.
Marco Borriello scored twice in the second half to give Genoa a 2-1 win over Lazio at the Stadio Olimpico.
Stefano Mauri put the hosts in front midway through the first half but Borriello led the Genoa fightback.
He struck his first in the 50th minute from the penalty spot after Lazio defender Gugliermo Stendardo was adjudged to have clipped Omar Milanetto inside the area.
And the visitors' top scorer completed the comeback by thundering home a header five minutes later.
Livorno claimed a priceless three points in their bid to pull clear of the relegation zone after a battling 2-1 win at fellow strugglers Torino.
Francesco Tavano was the hero for the visitors, netting twice in the opening 45 minutes to set Livorno on the way to their third away win of the season and fourth in total.
Davide Bottone pulled one back for Torino 12 minutes from full-time, but it failed to spark a fightback from the hosts who slip below Livorno and into 16th place.
Source : www.sportinglife.com
