ART. 1 . . . The ball is caused to go out of bounds by the last player in bounds to touch it or be touched by it, unless the ball touches a player who is out of bounds prior to touching something out of bounds other than a player.
ART. 2 . . . If the ball is out of bounds because of touching or being touched by a player who is on or outside a boundary line, such player causes it to go out.