Inter Milan's hopes of a fifth successive Serie A title suffered a setback on Saturday evening as Jose Mourinho's side were held 1-1 at Palermo.
The Nerazzurri, perhaps fatigued by their Champions League heroics at Chelsea in midweek, could now be overtaken by city rivals AC Milan on Sunday when the Rossoneri take on Napoli at the San Siro.
Diego Milito fired Inter ahead from the penalty spot after ten minutes but Edinson Cavani levelled after 24 minutes and neither side could find a winner. The result left Inter two points clear of Milan, having played a game more.
Third-placed Roma are four points adrift of Inter after Mirko Vucinic netted a hat-trick in a 4-2 win over Udinese.
Luca Toni fired the Giallorossi in front after 14 minutes and Vucinic doubled the lead with his first after 24 minutes. However, Palermo hit back to go in front with two goals from Antonio Di Natale, one of which came from the penalty spot.
But Vucinic restored the hosts' lead from the spot after 66 minutes and netted his third and Roma's fourth seven minutes from time.
Fiorentina climbed above Cagliari to revive their hopes of qualifying for Europe next season thanks to a comfortable 3-0 win over European rivals Genoa.
Mario Santana put the Viola ahead in the fifth minute before a disputable penalty allowed Alberto Gilardino to double their advantage in the 73rd minute. The first goal in Serie A for 17-year-old forward Khouma El Babacar rounded off the win in the 86th minute
