Defensive linemen are expected to disrupt the passing game, sack the quarterback and shut down the r

Defensive linemen are expected to disrupt the passing game, sack the quarterback and shut down the running game. (Check out the Ndamukong Rising series for some serious D-line training.) This is done by a combination of getting around or through the offensive linemen, tackling the running back before he can break out, and getting to the football. Secure harness around waist with sled resistance behind you
Get into three- or four-point stance

Explode out of stance and sprint for specified distance; take an explosive first step, drive with knees and stay low to the ground
Repeat for specified reps
Sets/Distance: 6-8×5 yards

Resisted Partner SprintStand up and get into ready position
Partner stands in front with hands on your shoulders
Sprint against resistance provided by partner for specified distance
Sets/Distance: 6-8×5 yards

Resisted BackpedalThis drill is important because defensive linemen get pushed back to open up holes for the running game. Like the Resisted Sprint drill, it can be performed by towing something or with a partner.
Secure harness around waist with resistance in front
Get into three- or four-point stance
Explode out of stance and backpedal for specified distance; keep hips low and pick up feet
Repeat for specified reps
Sets/Distance: 6-8×5 yards

Assisted Partner BackpedalStand up and get into ready position
Partner stands in front with hands on your shoulders
Explode out of stance and backpedal in control for specified distance with partner pushing you backwards
Repeat for specified reps
Sets/Distance: 6-8×5 yards

Quarterback Run DownThis drill develops the footwork needed to get around an offensive lineman and rush the quarterback. To perform, set up five cones as shown below.
Assume ready position with hands up at cone 1
Shuffle to cone 2; keep weight on the balls of feet, hips low and feet under hips
Spin around cone 2 to face cone 3
Explosively accelerate and sprint to cone 3
Repeat for specified reps
Sets/Reps: 3-5xdrill

Stop the RunThis drill develops the footwork needed to get to a running back who is about to break through the line. To perform, set up five cones as shown below.
Assume ready position with hands up at cone 1
Backpedal to cone 2; keep hips low and pick up feet
Spin around outside of cone
Explosively accelerate and sprint to cone 3
Repeat for specified reps
Sets/Reps: 3-5xdrill
For the last two drills, set up the cones on either side of center, depending on which side you play. To make the drills more realistic, begin in stance in front of cone 1 and have a partner act as an offensive lineman.