We know that Juventus is the team with the most ambition to catch Napoli and so far Juventus have done it perfectly
If Juventus wins then the point difference is 4 points meaning that Napoli is really not safe.
Additionally, Juventus has now won 8 straight games in Serie A. I'm delighted Napoli beat Sampdoria after losing to Inter, something I remember being quite sad about. They still need to get back into shape, though.
Napoli hasn't lost any of their last three home games against Juventus, and they haven't lost at home either, thus I believe that gives them the advantage over Juventus. In football, though, anything may happen at any time. Juventus now has the top defense in the league and has been playing incredibly well. I don't know who the winner will be at the end of the match.