Up and Under Move

[Jurassic Referee]

Originally Posted by BktBallRef

4-23-3c
After the initial legal guarding position is obtained:
The guard may move laterally or obliquely to maintain position, provided it is not toward the opponent when contact occurs.

The rule does not exclude an airborne defender. If he moves, leaps, jumps, runs toward the offensive player and creates illegal contact, he has fouled. Why do you think defenders are coached to never leave their feet?

Still disagree. The guard jumping at the shooter would not have initiated illegal contact at any time before landing if the shooter hadn't moved under the defender after he became airborne.

The way that I read it, I'd call this one on the shooter.