[BillyMac]

Originally Posted by Camron Rust

Oh, but the defender wasn't set!!! Of course he wasn't. He doesn't have to be.

From Things Officials Should Probably Not Be Saying In A Game

“He wasn’t set”, is often an official’s answer to a coach who is questioning a blocking foul on his player. This implies that a defensive player must be set, and can’t move, to take a charge, while, in reality, the rules say otherwise. A defensive player does not have to remain stationary to take a charge. A defender may turn away or duck to absorb contact, provided he, or she, has already established legal guarding position, which is both feet on the playing court and facing the opponent. The defender can always move backwards, or sideways, to maintain a legal guarding position, and may even have one, or both feet, off the floor when contact occurs. That player may legally rise vertically. However, if the defender is moving forward, then the contact is caused by the defender, which, in this case, is a blocking foul.

From The Most Misunderstood NFHS Basketball Rules list:

A defensive player does not have to remain stationary to take a charge. A defender may turn away, or duck, to absorb contact, provided the defender has already established legal guarding position, which is both feet on the playing court, and facing the opponent. The defender can always move backwards, or sideways, to maintain a legal guarding position, and may even have one or both feet off the floor when contact occurs. That player may legally rise vertically. If the defender is moving forward, then the contact is caused by the defender, which is a blocking foul. If the opponent with the ball is airborne, the defender must have obtained legal position before the opponent left the floor.