Basketball - Scoring Protection
Not every ball near the rim can be touched.
Goaltending and basket interference protect both the shooter and the basket itself. Officials judge flight, backboard contact, cylinder status, and rim contact before deciding whether the defense erased a legal score or the offense illegally helped one in.
Quick ruling: first ask whether the ball is still a legal live rebound attempt or already protected by goaltending or basket-interference rules. Then decide whether the points count, are cancelled, or are awarded automatically.