A hidden ball trick is a play in which a player deceives the opposing team about the location of the ball. Hidden ball tricks are most commonly observed in baseball, where the defence deceives the runner about the location of the ball, to tag out the runner. In goal-based sports (e.g., American football and lacrosse), the offence deceives the defence about the location of the ball, in an attempt to get the defense running the wrong way, such as in a fumblerooski.