2-23-9
An illegal kick is any intentional striking of the ball with the knee, lower leg or foot which does not comply with Articles 3 and 4. When the ball is loose following an illegal kick, it is treated as a fumble.
2-23-4
A scrimmage kick is any legal kick from in or behind the neutral zone. Either a place kick, punt, or drop kick may be used. For a place kick, the ball must be controlled on the ground or on a legal kicking tee by a teammate.