Most important goal for the defense here is to deny the pass to the high post as this is a very vulnerable position.

• x3 is fronting the low post (x5 is helping)
• x2 is denying the pass to the high post
• x1 is defending the ball
• x4 is ready to pick up weak skip passes and defend backdoor cuts

We want to make it impossible to pass directly to the low post here

• x3 steps a little further out to be able to rotate to 4 in case of a pass (no deny)
• x2 can sag off a little more into the paint when the high post is empty

• x3 closes out to the ball in the corner
• x5 fronts #5 to deny a pass to the low post
• x2 sags into the zone to make a pass to #5 more difficult

• We are rotating back to the standard 2-3 formation.
• x2 defends #1 closely if they are a dangerous shooter, otherwise x2 can sag off

https://www.thehoopsgeek.com/basketball-plays/2-3-zone-top-of-the-key/

• x4 closes out to #3
• x4 gets bumped back down once x2 makes the rotation
• rest of defense rotates to regular formation for ball on the wing