audibles
Audibles are changes to the planned offensive play at the line of scrimmage, called by the quarterback after surveying the defense. The audible replaces the originally selected play with an alternative, such as switching from a passing play to a run or altering formation. The concept is used to adapt to defensive alignment, blitzes, or coverage and to create a favorable matchup for the offense.
Execution of an audible involves pre-snap communication. After the huddle, the quarterback may relay the new
Strategic considerations accompany the use of audibles. When effective, audibles can gain immediate yardage, convert first
History and usage: The practice is widespread across American football at professional, college, and high school