Napoli is one of the most formed team in the Seria A this season and they won't back out. The Parthenopeans have not lost a game this season, the more reason I see them winning the title, beating AS Roma was absolutely one of their key game to win this season and they just did. Talking about the right time to win games and making sure that they first second position with enough points gap difference, consistency will now be fully active in the games.
They are playing like a giant in Serie A. They can win big, score a lot of goals but they also can complete their matches with minimal win like the latest win against AS Roma. Minimal wins will help them to destroy the league, not big wins.
When they win minimally, they prove that their defense are strong enough to protect their goalkeeper and their attacking players can take small chances to score winning goals. What Osemni got from the mistake of Smalling is like half of a chance but he turned it into a goal. Without that goal, the match would end with a draw and Napoli would have not created a lot of admiration and fear in Serie A.
Osemni might move to another club after this season as I don't think Napoli will be able to keep him staying too long. It would be great for Napoli and Osemni if they can win Serie A together in this season before a farewell party.