![]() ![]() The clock is stopped frequently, however, with the result that a typical college or professional game can exceed three hours in duration. In high school football, 12 minute quarters are usually played. The defense may also score points by tackling the ball carrier in the offense's own end zone, called a safety (which is worth two points).Ĭollegiate and professional football games are 1 hour long, divided into four quarters of 15 minutes each. If an offensive player loses the ball during play (a fumble) or the ball is caught by a defensive player while still in the air (an interception), the defense may attempt to run into the offense's end zone for a touchdown. While the opposing team has possession, the defense attempts to prevent the offense from advancing the ball and scoring. The offense may attempt to re-advance the ball into the opponent's end zone for a two-point conversion worth 2 points.The offense may attempt a field goal kick which is worth 1 point.Conversion attempts are used to score 1 or 2 points as follows: After scoring a touchdown, the offense is given an additional opportunity from the 2-yard line (3-yard line in amateur football) to attempt to score (in the NFL, 15-yard line on 1-point conversions). On offense, points are scored by advancing the ball into the opponent's end zone for a touchdown (worth six points), or by kicking the ball from the playing field through the raised vertical posts (the goalposts) which are most commonly situated on the end line of the end zone for a field goal (worth three points). If the offense does not advance at least 10 yards during their 4 downs, the team without the ball (the defense) regains control of the ball (called turnover on downs). If the offense succeeds in advancing at least 10 yards, they earn a "first down" and the number of tries allotted is reset and then they are again given 4 tries to advance an additional 10 yards, starting from the spot to which they last advanced. The team with the ball (the offense) has 4 plays ( downs) to advance at least 10 yards, and can score points once they reach the opposite end of the field, which is home to a scoring zone called the end zone, as well as the goalposts. The objective of this game is to score more points than the other team during the allotted time. During a play, each team should have no more than 11 players on the field, and each of them has specific tasks assigned for that specific play. Substitutions can be made between downs, which allows for a great deal of specialization as coaches choose the players best suited for each particular situation. ![]() ![]() These can be plays from scrimmage – passes, runs, punts or field goal attempts (from either a place kick or a drop kick) – or free kicks such as kickoffs and fair catch kicks. Gameplay in American football consists of a series of downs, individual plays of short duration, outside of which the ball is dead or not in play. The Tennessee Titans and the Houston Texans in formation before a play in October 2005 ![]()
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