Sampdoria join Roma, Inter Milan and Palermo on 23 points, a point behind Napoli and Juventus in fourth and third respectively.
Elsewhere, Fiorentina defeated Cagliari 1-0, whilst Genoa comfortably beat Lecce 3-1.
Bologna won 2-0 at Cesena, whilst Parma gained an invaluable three points with a 2-1 win over Udinese.
