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Rule book also states explicitly that the referee can give possession to the defensive side for a time count violation on third down after the 3MW.
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In Canadian football, the offensive team must run a play within 20 seconds of the referee whistling the play in; in amateur American football, teams have 25 seconds from the time the ball is declared ready for play. In the [[NFL]] teams have 40 seconds timed from the end of the previous down, or 25 seconds after the ball is declared ready for play after certain administrative stoppages and game delays. Before 2008, in college football, the play clock was 25 seconds after the ball was set, but the clock was not stopped for the ball to be set unless the previous play resulted in a stoppage of the clock. Now, the same intervals as the NFL are used, with minor differences for the final two minutes of each half.<ref>[http://www.ncaa.org/wps/portal/home?WCM_GLOBAL_CONTEXT=/wps/wcm/connect/NCAA/Media+and+Events/Press+Room/News+Release+Archive/2008/Playing+Rules/NCAA+Football+Rules+Committee+Proposes+Rules+to+Enhance+Student-Athlete+Safety+and+Encourage+Consistent+Pace+of+Play "NCAA Football Rules Committee Proposes Rules to Enhance Student-Athlete Safety and Encourage Consistent Pace of Play"]</ref>
In Canadian football, the offensive team must run a play within 20 seconds of the referee whistling the play in; in amateur American football, teams have 25 seconds from the time the ball is declared ready for play. In the [[NFL]] teams have 40 seconds timed from the end of the previous down, or 25 seconds after the ball is declared ready for play after certain administrative stoppages and game delays. Before 2008, in college football, the play clock was 25 seconds after the ball was set, but the clock was not stopped for the ball to be set unless the previous play resulted in a stoppage of the clock. Now, the same intervals as the NFL are used, with minor differences for the final two minutes of each half.<ref>[http://www.ncaa.org/wps/portal/home?WCM_GLOBAL_CONTEXT=/wps/wcm/connect/NCAA/Media+and+Events/Press+Room/News+Release+Archive/2008/Playing+Rules/NCAA+Football+Rules+Committee+Proposes+Rules+to+Enhance+Student-Athlete+Safety+and+Encourage+Consistent+Pace+of+Play "NCAA Football Rules Committee Proposes Rules to Enhance Student-Athlete Safety and Encourage Consistent Pace of Play"]</ref>


Also in the [[Canadian Football League]], a ''time count violation'' penalty is enforced differently at certain points of the game. If the time count violation occurs before the [[Three-minute warning (football)|three-minute mark of a half]], the penalty is five yards and the down is repeated. In the final three minutes, the penalty is a loss of down on first and second down or 10 yards, with the down repeated, on third down. The referee additionally has the right to give possession to the defence if he deems a time count violation committed on third down in the last three minutes of a half to be deliberate. (Time count violations during convert attempts, during which the ball is live but the clock does not run, are 5-yard penalties with the down repeated at all times in the game.)<ref>{{cite web|url=http://www.cfl.ca/uploads/assets/CFL/PDF_Docs/CFLRules_2010_ENG.pdf |title=Rule 1, Article 9 – Time Count |work=2010 Canadian Football League Rule Book |format=PDF |page=17 |publisher=Canadian Football League |accessdate=November 18, 2010}}</ref>
Also in the [[Canadian Football League]], a ''time count violation'' penalty is enforced differently at certain points of the game. If the time count violation occurs before the [[Three-minute warning (football)|three-minute mark of a half]], the penalty is five yards and the down is repeated. In the final three minutes, the penalty is a loss of down on first and second down or 10 yards, with the down repeated, on third down. The referee additionally has the right to give possession to the defensive team if he deems a time count violation committed on third down in the last three minutes of a half to be deliberate. (Time count violations during convert attempts, during which the ball is live but the clock does not run, are 5-yard penalties with the down repeated at all times in the game.)<ref>{{cite web|url=http://www.cfl.ca/uploads/assets/CFL/PDF_Docs/CFLRules_2010_ENG.pdf |title=Rule 1, Article 9 – Time Count |work=2010 Canadian Football League Rule Book |format=PDF |page=17 |publisher=Canadian Football League |accessdate=November 18, 2010}}</ref>


In the strategy of [[clock management]], a team can slow the pace of a game by taking the maximum amount of time allotted between plays. A team wishing to do so would wait to snap the ball until there is one second left on the play clock.
In the strategy of [[clock management]], a team can slow the pace of a game by taking the maximum amount of time allotted between plays. A team wishing to do so would wait to snap the ball until there is one second left on the play clock.

Revision as of 21:07, 18 November 2010

A play clock (also called a delay-of-game timer[1]) is a timer designed to increase the pace (and subsequently, the score) in American football and Canadian football, similar to what a shot clock does in basketball. The offensive team must put the ball in play by either snapping the ball before during a scrimmage down or kicking the ball during a free kick down before the time expires, or else they will be assessed a 5-yard delay of game (American football) or time count violation (Canadian football's "delay of game" is a different offense) penalty. If a visible clock is not available or not functioning, game officials on the field will use a stopwatch or other similar device to enforce the rule.

In Canadian football, the offensive team must run a play within 20 seconds of the referee whistling the play in; in amateur American football, teams have 25 seconds from the time the ball is declared ready for play. In the NFL teams have 40 seconds timed from the end of the previous down, or 25 seconds after the ball is declared ready for play after certain administrative stoppages and game delays. Before 2008, in college football, the play clock was 25 seconds after the ball was set, but the clock was not stopped for the ball to be set unless the previous play resulted in a stoppage of the clock. Now, the same intervals as the NFL are used, with minor differences for the final two minutes of each half.[2]

Also in the Canadian Football League, a time count violation penalty is enforced differently at certain points of the game. If the time count violation occurs before the three-minute mark of a half, the penalty is five yards and the down is repeated. In the final three minutes, the penalty is a loss of down on first and second down or 10 yards, with the down repeated, on third down. The referee additionally has the right to give possession to the defensive team if he deems a time count violation committed on third down in the last three minutes of a half to be deliberate. (Time count violations during convert attempts, during which the ball is live but the clock does not run, are 5-yard penalties with the down repeated at all times in the game.)[3]

In the strategy of clock management, a team can slow the pace of a game by taking the maximum amount of time allotted between plays. A team wishing to do so would wait to snap the ball until there is one second left on the play clock.

References

Notes
  1. ^ For example, Electro-Mech, Eversan, Nevco, and other manufacturers call these devices "delay of game timers" in their literature.
  2. ^ "NCAA Football Rules Committee Proposes Rules to Enhance Student-Athlete Safety and Encourage Consistent Pace of Play"
  3. ^ "Rule 1, Article 9 – Time Count" (PDF). 2010 Canadian Football League Rule Book. Canadian Football League. p. 17. Retrieved November 18, 2010.