Giorgio Chiellini says that Juventus realised they could win the Scudetto last season after collecting a 3-3 draw at Napoli.
The two teams meet at the San Paolo again on Friday in a potentially decisive game, a match that holds happy memories for the 28-year-old.
“Even though there were plenty of games to go, that match gave us the belief that we could win the Scudetto,” he told Sky Sport Italia after Juve came from behind to salvage a point.
“We did just that, we won the title and we want to win it again.”
Napoli are only six points behind leaders Juventus and the Italian international has great respect for their opponents.
“There have been a lot of games since we met in Serie B and Napoli have improved immensely,” the defender added.
“They have an ambitious President, and since Coach Walter Mazzarri arrived, they’ve taken a further step up in quality.
“The club has not only become competitive in Italy, but also in Europe, as they showed last year over two legs against Chelsea.
“Yes they were knocked out, but they lost to the eventual champions and, in fact, would have deserved to progress to the next round.
“The match on Friday could go either way. It won’t be decisive though because there is still a long way to go in the championship, but it will of course be important for both teams.”