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A 4–3 base defense. In American football, a 4–3 defense is a defensive alignment consisting of four down linemen and three linebackers. It is called a "base defense" because it is the default defensive alignment used on "base downs" (1st and 2nd downs). However, defenses will readily switch to other defensive alignments (such as a nickel ...
Stunt (gridiron football) A stunt in American football and Canadian football, sometimes called a twist, is a planned maneuver by a pair of players of the defensive team by which they exchange roles to better slip past blockers of the offensive team at the beginning of a play, in order to better rush the passer. [ 1]
Blitz (gridiron football) In gridiron football, blitzing is a tactic used by the defense to disrupt pass attempts by the offense. During a blitz, a higher than usual number of defensive players will rush the opposing quarterback, in an attempt either to tackle them or force them to hurry their pass attempt. [1]
One of the most effective methods of rushing the passer is by using a stunt or twist, which is when defensive players quickly change positions at the snap of the ball and engage a different blocker than the offense expected, [3] Defenses typically task three or four defensive lineman to rush the passer on most plays, but most will occasionally increase pressure by blitzing one or more non ...
Zone blitz. In American football, a zone blitz is a defensive tactic that sends additional players to rush the opposing team's quarterback, whilst also unexpectedly redirecting a supposed pass rushing player into pass coverage instead. [1] [2] This tactic also includes zone coverage (rather than man-to-man coverage ). [3] [4]
Like a Sam linebacker in a 4–3 scheme, the other 3–4 OLB must be able to cover, blitz, and play the run. Strengths of the 3–4 include speedy ILBs and OLBs in pursuit of backs in run defense and flexibility to use multiple rushers to confuse the quarterback during passing plays without being forced into man-to-man defense on receivers.
46 defense. 46 Formation, original 4–3 base set. The 46 defense is an American football defensive formation, an eight men in the box defense, with six players along the line of scrimmage. [ 1] There are two players at linebacker depth playing linebacker technique, and then three defensive backs. The 46 defense was originally developed and ...
In a "man block" system, blockers are paired with defenders according to certain rules to create a running lane. If the defensive front changes, or if the defense stunts or blitzes, the blocking rules may change. This requires learning multiple rules for the same play.