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 defence running the wrong way, such as in a fumblerooski. Baseball and softball In the sports of baseball and softball, the hidden ball trick usually involves a fielder using sleight of hand or misdirection to confuse a baserunner as to the location of the ball, allowing the fielder to tag out the runner unawares. Though several variations of the play exist, they usually involve a fielder keeping the ball without the runner's knowledge, waiting for the runner to step off a base, and then quickly tagging the runner out. For the trick to work, the fielder (generally an infielder) must get the ball while the ball is still in play, and the runner must either not know that the fielder has the ball or think that the play is over. Fielders usually try to fool the runner by miming a throw to the pitcher or another defender while keeping the baseball out of sight, often in his glove. If the runner is not paying attention and assumes that the closest fielder no longer has the ball, he may stray off the base and be tagged out. A related tactic is to quickly re-tag the runner after an unsuccessful tag in the hope that his hand or foot has lost contact with the base after a slide but before time has been called. In most situations, the balk rule precludes a pitcher from performing a hidden ball trick. In high school and college baseball, a balk is called (NFHS R6-S2-A5) if a runner or runners are on base and the pitcher, while he is not touching the pitcher's plate, makes any motion naturally associated with his pitch, or he places his feet on or astride the pitcher's plate or positions himself within approximately five feet of the pitcher's plate without having the ball. In professional baseball, under Rule 6.02(a)(9), a balk occurs if the pitcher is standing on or astride of the pitching rubber without the ball. As play