Cristiano Ronaldo scored twice but champions Juventus had to settle for a point as a late Gervinho double snatched a 3-3 draw after promoted Parma staged an impressive comeback in Serie A on Saturday.

Juventus' dropped points allowed Napoli to cut the gap on the leaders to nine points after a confident 3-0 win over Sampdoria. Massimiliano Allegri's side had already had their confidence shaken after a 3-0 defeat to Atalanta shattered their hopes of winning a fifth straight Coppa Italia.