text: There is any feinting toward the batter or first base, or any dropping of the ball (even though accidental) and the ball does not cross a foul line.
  The pitcher fails to step with the non-pivot foot directly toward a base (occupied or unoccupied) when throwing or feinting there in an attempt to put out, or drive back a runner; or throwing or feinting to any unoccupied base when it is not an attempt to put out or drive back a runner.
  An illegal pitch from any position.
  Failing to pitch to the batter in a continuous motion immediately after any movement of any part of the body such as he habitually uses in his delivery
  Taking a hand off the ball while in a set position (unless he pitches to the batter or throws toward a base or he steps toward and feints a throw to second or third base)
  Failing to pitch to the batter when the entire non-pivot foot passes behind the perpendicular plane of the back edge of the pitcher’s plate, except when feinting or throwing to second base in an attempt to put out a runner
  The pitcher makes a movement naturally associated with pitching and/or places his feet on the pitcher's plate without the ball.