players and played against a defense that is unprepared. If the defense is not fooled, the quarterback can simply complete the fake task, and return to the center to call the snap. The Indianapolis Colts, New Orleans Saints, Pittsburgh Steelers, and St. Louis Rams have used variations of this play in the NFL, and it was also used in the movie The Longest Yard (2005) for a winning two-point conversion. Under some state high school rules, if the quarterback or coaches on the sideline say anything that may lead the defense to believe that a snap is not imminent, then the play is an illegal unfair act. Fake spike When the clock is running low, it is not uncommon for a quarterback to spike the ball to stop the clock, either to set up for the next play or bring on the special teams. Here too, the objective is to trick the defense into believing that no downfield play will be run—but not fool the officials into thinking the same, which can also ruin the play. A famous example occurred in 1994 with the Clock Play, when Dan Marino's Dolphins were playing the Jets. From the account of Pat Kirwan, former Jets defensive coach and executive, Another famous example occurred in 2013 during a Week 8 game between the Dallas Cowboys and the Detroit Lions. With a minute left in regulation, Lions quarterback Matthew Stafford drove 80 yards downfield, including a 22-yard pass to Calvin Johnson that stopped 1 yard short of the goal line with 33 seconds left with the Lions out of timeouts. Stafford then jumped over his lineman for the game-winning touchdown. Peyton Manning was also a frequent user of the fake spike, and "sold it" so well in a 2001 game against New Orleans that the referee Jeff Triplette blew the whistle to stop the play, costing the Colts a probable touchdown. Tackle-eligible A tackle-eligible play involves placing an offensive tackle in the position of a tight end. Because of numbering restrictions, the offensive team must report the positioning to the official, who announces to everyone that the ineligible-numbered player is an eligible receiver, reducing the element of surprise. (The exact mechanism of the tackle-eligible play varies by league; college football and Canadian football, for example, require a lineman to physically change his jersey to become eligible.) Often, the trickery involves an unbalanced offensive line, such