A1 is attempting to make a throw-in and Team B is applying a great deal of pressure. B1 reaches through the boundary-line plane and waves his/her hand in an effort to prevent the pass. The action takes place on a court which has more than 3 feet of unobstructed space outside the boundary line.
Team B is warned for violation of the boundary plane. The warning is reported to the scorer and to the coach and applies for the rest of the game. Any subsequent delay-of-game situation by Team B shall result in a technical foul charged to Team B.