When a pitcher's plant foot leaves contact with ground before the ball leaves her hand during a pitch. When the ball is not in play. Umpire will declare dead ball. Penalty could be ejection of the offending player. When the batter is hit by the pitched ball and the batter is not swinging at the ball or a strike is not called.
Dead ball results with batter advancing to first base.
When umpire calls infield fly, the batter is out.