Naples' defensive strategy for Round 4 is to play with a high line and aggressive pressing. The team will attempt to outplay their opponents in the midfield, using their speed and skill to control possession. They will also use their height and strength in defense to block shots and clear balls from dangerous areas.

The team will employ a three-man backline, with two full-backs and one central defender. This formation allows them to have more freedom on the pitch and provides them with more options when it comes to defending against counterattacks. The backline will be supported by a deep-lying midfielder who will act as a holding player and provide cover for the defenders.

In terms of tactics, Naples will look to dominate the ball and create chances through the midfield. They will utilize their quick passing game to break down their opponents' defenses and create scoring opportunities. Additionally, they will try to hit their opponents on the counterattack, using their pace and athleticism to exploit any gaps in their defense.

Overall, Napoli's defensive strategy for Round 4 is designed to limit the opposition's chances of scoring and win the game by controlling the tempo of the match. By playing with a high line and utilizing their physicality and speed, they hope to secure all three points and continue their impressive form in Serie A.