AS Roma failed to put extra pressure on stuttering leaders Inter Milan when they were held to a 3-3 draw at lowly Livorno amid a flurry of goals in Serie A on Sunday.
A Cristiano Lucarelli hat-trick for third-bottom Livorno meant third-placed Roma could only move to within six points of Inter, who lost 3-1 at Catania on Friday.
However, AC Milan moved to within one point of the leaders as they snatched a dramatic 1-0 victory at home to Chievo.
Milan appeared to have wasted a golden opportunity until veteran midfielder Clarence Seedorf scored a stunning winner in injury time. However, the win was soured as David Beckham suffered a torn Achilles tendon that rules him out for the rest of the season.
Palermo stayed fourth despite a 3-2 defeat at Udinese, who went seven clear of the drop zone largely thanks to goals either side of the break from striker Antonio Floro Flores.
Juventus, enduring a nightmare season, could have gone above the Sicilians into the fourth and final Champions League qualifying spot but blew a three-goal lead to draw 3-3 with bottom side Siena in Turin.
Alessandro Del Piero scored his 300th and 301st Juve goals inside the first seven minutes with a close-range finish and superb volley before Antonio Candreva thumped in a third.
Siena hit back through Massimo Maccarone and Abdelkader Ghezzal, who then netted a leveller from the spot on 74 minutes after hapless Juve defender Zdenek Grygera fouled Maccarone.
Sampdoria are a point behind fifth-placed Juventus after a 1-1 draw at Bologna with doubts over whether the home side's injury-time equaliser was offside.
Samp's city rivals Genoa, two points further back, enlivened their hopes of Europa League football next season with a thrilling 5-3 victory over Cagliari.
Parma beat second-bottom Atalanta 1-0 while Lazio remain in deep trouble, two points above the relegation zone, following a harrowing 2-0 home defeat by Bari.
