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The chain gang. In gridiron football, the chain crew (commonly known as the "chain gang") is a crew that manages signal poles on one of the sidelines.There are three primary signal poles: the "rear rod" that marks the beginning of the current set of downs, the "forward rod" that marks the line to gain, and the "box" that marks the line of scrimmage.
A sideline official holding a dicker-rod during the 1974 World Football League season; running with the football is quarterback Dave Mays. The dicker-rod (also spelled dickerod) is a device intended to replace the first down chains commonly used to measure 10-yard distances during games of gridiron football.
When the desired outcome is to end the match quicker, it is analogous to "running out the clock" (and associated counter-tactics) seen in many sports. Clock management strategies are a significant part of American football, where an elaborate set of rules dictates when the game clock stops between downs , and when it continues to run.
Per the league, a tracking system is installed at every NFL stadium that includes "20-30 ultra-wide band receivers," "2-3 radio-frequency identification (RFID) tags installed into the players ...
During the game, the officials are assisted in the administration of the game by other persons, including a clock operator to start and stop the game clock (and possibly also the play clock); a chain crew who hold the down indicator and the line-to-gain chains on the sideline; and ball boys, who provide footballs to officials between downs (e.g ...
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Running back Chris Johnson of the East Carolina Pirates (No. 5) receiving the handoff and rushing the ball during the 2007 Hawaii Bowl. Rushing is an action taken by the offense, usually the running back, but it can also be the quarterback, that means to advance the ball by running with it, as opposed to passing, [1] or kicking. [2]
Catenaccio (Italian pronunciation: [kateˈnattʃo]) or The Chain is a tactical system in football with a strong emphasis on defence. In Italian , catenaccio means "door-bolt", which implies a highly organised and effective backline defence focused on nullifying opponents' attacks and preventing goal-scoring opportunities.