How are sacks recorded in the NFL?

In the NFL, a sack is recorded when a defensive player tackles the quarterback behind the line of scrimmage while he is attempting to pass. The play is counted as a loss of yardage for the offense, and the defensive player who makes the tackle is credited with the sack. Sacks are an important statistic for assessing a player’s impact on defense. Additionally, the total number of sacks by a player can influence awards and contract negotiations.