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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.
But it does suggest that the NFL can do better than its longtime use of guesswork spotting and chain crews. Details about the the optical tracking and how it works weren't reported Thursday.
A running-back may start the game but share time with another running back in specific situations or to provide the opportunity for rest during the game. The pole attached to the end of the chain that is used by the chain crew to measure for a new series of downs, i.e. the line to gain a new "first down".
A down in gridiron football is an attempt by the offensive team to run a play to advance the ball, while the defending team simultaneously attempts to halt their advance. The down is a distinguishing characteristic of the game compared to other codes of football, but is synonymous with the 6 "tackle" rule in rugby league.
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A route tree for a receiver on the left side of the offense. A route is a pattern or path that a receiver in gridiron football runs to get open for a forward pass. [1] Routes are usually run by wide receivers, running backs and tight ends, but other positions can act as a receiver given the play.
And then there was the marriage proposal by Boise State running back Ian Johnson — shortly after scoring the winning two-point play — to cheerleader Chrissy Popadics that was accepted on national TV. That game put Broncos football on the national map for most fans, but looking back 18 years later, Petersen sees it differently.