Juventus legend Gianluca Vialli fears his old club risk losing the Scudetto to Napoli.

Vialli concedes Napoli were worthy winners at Juventus stadium on Sunday.

"Juventus have one more point, but in my opinion, it is as if they had one less in Napoli," said Vialli. "Mandzukic, he entered and seemed to have some physical problem, Chiellini was forced out immediately, it seemed like a team on it's last legs, and many times the legs are managed by the mind.

"The Napoli masterpiece was to make the match and not to allow a shot on goal for Juventus, it was not easy."