Both teams have picked up 19 points from seven matches so far and have yet to lose in this league this season.
"Our team has improved a lot and we have reached a level of great maturity," said Mazzarri on Friday. "Last season we struggled with both league and Champions League commitments, but it has helped us grow.
"I've heard a lot of the Juve players, stars like [Gianluigi] Buffon, [Andrea] Pirlo and Giorgio Chiellini compliment us. They have said that if they don't play at their best, we will make it difficult. To hear these things is nice.
"Victory would be a great positive and a defeat would be a negative - that is obvious. But there are a lot of games left, and these are still only three points to play for. I think it will be a good game."
Lazio and Inter Milan are both four points behind the duo.