This is an example of a charging foul. An offensive player with one or both feet on the floor is responsible for contact with a defender in legal guarding position anywhere on the playing floor – including inside the Defensive Semi Circle (DSC). In this example, White 42 is defending Black 3 on a drive to the basket. White 42 establishes a legal guarding position with his left foot inside the DSC when Black 3 causes illegal contact with his left foot still in contact with the floor. This is a charging foul by Black 3.