Hail Mary Pass - Defense

Defense

The standard defense against the Hail Mary pass is the prevent defense.

The first priority is to ensure the defensive backs are in zone coverage, and that they keep the receivers well in front of them until the ball is thrown. Second, generally no more than four defensive linemen rush the quarterback, with all the linebackers dropping back to prevent a shorter pass. In many cases, the defense will remove some of its linebackers and linemen and replace them with extra defensive backs, in order to help compensate when the opposing team brings in extra receivers, leading to there being five or six defensive backs on the field instead of the usual four, generally known as the nickel and dime packages, respectively. Once the ball gets down field, the primary role of the defensive back is to knock the ball to the ground, thus ending the play, and preventing something such as an offensive player stripping the ball, a tipped pass resulting in a reception, or a fumble that could happen if the defensive player intercepted the ball.

Occasionally, especially in college football, offensive players (usually wide receivers) will be put in on defense to defend a Hail Mary. Hail Mary passes are most successful when the defense is in the wrong alignment. If the defense is in man-to-man coverage, and a receiver manages to break coverage by getting further down field than the nearest defensive back, the chance of success is greatly improved.