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A standard football game consists of four 15-minute quarters (12-minute quarters in high-school football and often shorter at lower levels, usually one minute per grade [e.g. 9-minute quarters for freshman games]), [6] with a 12-minute half-time intermission (30 minutes in the Super Bowl) after the second quarter in the NFL (college halftimes are 20 minutes; in high school the interval is 15 ...
Safety (S), historically known as a safetyman, is a position in gridiron football on the defense. The safeties are defensive backs who line up ten to fifteen yards from the line of scrimmage. There are two variations of the position: the free safety (FS) and the strong safety (SS). Their duties depend on the defensive scheme.
An example where a defense may choose to do this could be an illegal kick committed in the end zone by the offense (such as may occur following a bad snap on an attempted punt) on fourth down; rather than allowing the play to result in a safety, the defense could accept the penalty, which for an illegal kick is 10 yards (or no more than half ...
Rules vary based on organization but generally use a reduced number of players (six or seven) on a reduced size field (ranging from a basketball court to a 60-yard long field). Women's American football is the organized play of the sport by women. Most organized leagues play by rules identical to male-dominated leagues.
Zone coverage (also referred to as a zone defense) is a defensive scheme in gridiron football used to protect against the pass. Zone coverage schemes require the linebackers and defensive backs to work together to cover certain areas of the field, making it difficult for the opposing quarterback to complete passes.
The 4-3 defense, most commonly used in the NFL, employs two defensive tackles (and a defensive line of four men, with three linebackers behind them), while the 3-4 defense uses just a single defensive tackle, called the nose tackle (and a defensive line of three men, with four linebackers behind them). Defensive ends in a typical 3-4 have ...
In gridiron football, blocking below the waist is an illegal block, from any direction, below the waist by any defensive player or by an offensive player under certain situations, by any player after change of possession, with certain exceptions.
Pages in category "Gridiron football rules" The following 4 pages are in this category, out of 4 total. This list may not reflect recent changes. A.