Previous sack breakdowns:
The quality of a defense’s coverage in the backend is an integral factor in determining how many sacks they produce. In a league where the ball is coming out faster than ever, it’s nearly impossible for the defensive front to get the time they need to reach the quarterback without the defensive backfield forcing the quarterback to hold the ball longer than he would like.
Sacks that happen due to a lack of options for the quarterback have come to be known as “coverage sacks.