The play described below is provided for your review and discussion. The rulings given are based on NFHS rules. NCAA rulings may be different.
A-1 drives to the basket and attempts to score on a layup. A-1 is off balance and launches a try that enters the net from below and hits the bottom side of the ring. The ball then comes back out of the net.
Handle the situation.
This is a legal play. Entering the basket from below only becomes a violation if the ball passes through the basket. Since the ball never got above the ring, that did not happen. Play should continue without a whistle.
(References: Rule 9-4)
Have you seen an unusual play? Let all officials benefit from it by sending it to Play of the Day

Correct. Officials need to understand this, so it properly admistered without a whistle.
Thanks!