This document discusses the rules around legal guarding position and blocking/charging calls in basketball. It defines legal guarding position as having both feet on the court and facing the offensive player. It states that a blocking foul occurs when a defensive player impedes an opponent with or without the ball through illegal personal contact. A charging foul is called when an offensive player with the ball creates illegal personal contact by pushing or moving into the defender's torso. The powerpoint provides examples of legal guarding position and blocking/charging plays.