What is a moving screen in basketball?

A moving screen in basketball occurs when an offensive player illegally obstructs a defensive player's movement by moving into their path while they are setting a screen for a teammate. This results in a foul called by the referees, and the defensive team is awarded a free throw or possession of the ball.

Moving screens are often called when the offensive player fails to establish a legal position in front of the defender they are screening, or when they initiate contact with the defender before the screen is set. This can lead to offensive fouls and turnovers, as well as frustration for the offensive team.

To avoid committing a moving screen, offensive players must ensure they are stationary and set before making contact with the defender. They must also establish a legal position in front of the defender and refrain from using their body to impede the defender's movement.

Moving screens are a common violation in basketball and are often a point of emphasis for referees to ensure fair play and prevent excessive physical contact on the court.