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American football game defensive formation

In American football game, the 4–four defense force is a defensive alignment consisting of 4 down linemen and four linebackers.

Originally seen as a passing defense against the spread, modern versions of the 4-4 are attacking defenses stocked with multiple blitz packages that can easily be concealed and altered.^{[1] [2]} The modern defence force is based on speed, athleticism and intelligence rather than on size and force. Versatility is central because players may have to change roles from one play to the next. A top priority of the iv–iv defense is stopping the run by keeping eight men close to the line of scrimmage. This also makes it difficult for the criminal offense to identify where the pressure comes from when the defence blitzes.

4-iv front end, Virginia Tech defence force, Thousand front end.

History [edit]

Four human fronts are seen in the 1940s every bit advertizement hoc ways to deal with the "Bears" T, as the result of two linemen dropping off from the 6-2 of the fourth dimension into short zones, and later as a prepared defense for use against the spread offenses of the time.^{[1] [3] [4]} In the 1950s, the half dozen homo line was no longer seen in the pros as a base defence, and the broad tackle half dozen evolved to handle the interior attack of the Power T, and the outside threats of the Separate T.^{[5] [6]} To bargain with flankers and carve up ends, contain theories such as the "five spoke" contain were developed, where the defensive ends became much like outside linebackers and had pass defense responsibilities.^{[6] [7]} Homer Smith, in his history of 8 man lines, shows formations starting with the 1940s style 6-2, changing into the wide tackle six, and eventually, six man lines becoming iv man lines equally the defensive ends were relabeled outside linebackers.^[5] This alter is like to the defensive ends of the 5-ii existence relabeled the outside linebackers of the 3-four.

Defensive tackles [edit]

Requirements for defensive tackles are highly dependent on the version of the defense beingness played. For case, the 4-4 of Joe Roman requires quickness, size, and a thespian no taller than half dozen' four".^[8] In the four-4 Split of Roman, the defensive tackles line up heads upwards on the offensive baby-sit, or perhaps on their outside shoulder. In the 'Thousand front' of Frank Beamer'south teams, the weak side tackle lines up on the within shoulder of the offensive guard, and the strong side tackle lines up on the outside shoulder of the offensive guard.^[2]

Defensive ends [edit]

Requirements for defensive ends are highly dependent on the version of the defence beingness played. Speed and height are often valued, and defensive ends in these systems are often converted linebackers. ^[nine] Though alignment is highly dependent on the front, weak side ends are oftentimes outside the offensive tackle, and strong side ends outside the shoulder of the tight stop. In the 'G front' of Virginia Tech, the Sam linebacker and the end switch positions, with the end assuming a position just inside the shoulder of the tight end, and the Sam linebacker staying wide of the end, forth the line.^[ii]

Within linebackers [edit]

There are two inside linebackers in the 4–iv scheme sometimes known as the Mike and Cadet linebackers. Where and how they play, and personnel types preferred, are highly scheme dependent. At least one of these linebackers assumes substantial laissez passer coverage responsibilities.^[x]

Outside linebackers [edit]

As there are ii within linebackers, there are as well two outside linebackers. These outside backers can exist described generically as the Sam and Will positions. The Sam linebacker typically sticks to the strong side, often exterior the strong side defensive end, and has substantial laissez passer coverage responsibilities.^[xi] The Will position will mostly play on the weak side. Nonetheless, the Volition can be moved to just about anywhere to better adjust the defensive call or adjustment.^[2] Depending on the call and the personnel in place, Will's job could be purely to become later on the quarterback, play at linebacker depth, or to driblet into coverage.

The nature of the defense requires a great deal of athleticism from these positions. Roman describes the Sam as the most difficult linebacking position to fill in his defense, and describes the Volition as a stiff condom type. In the defenses of Virginia Tech, Sam is compared to a cornerback, and Will to a complimentary rubber, in terms of the personnel types preferred for this role.^[ii]

Secondary [edit]

The cornerbacks are often on islands in man coverage or in a deep zone, and they need to possess exceptional speed and change of direction skills. They also need to be intelligent when diagnosing the play and when in zone coverage, must be able to play the ball.^[12] The corners will generally line up several yards off the ball.^{[thirteen] [2]} The safety in the 4–4 defence force should be one of the team'south all-time athletes.^[xiv] He needs to be fast enough to play in coverage, diagnose plays well, and hit like a linebacker. The condom will about e'er be assigned to the deep heart of the field, but can also be blitzed in various packages.

Usage [edit]

4-4 base alignment [edit]

In that location are teams that line up in a four-iv equally a base. An case are the Virginia Tech teams of Frank Beamer and Justin Fuente, with Bud Foster serving as defensive coordinator under both.^{[15] [16]} Another eight man front with four down linemen (about of the fourth dimension) were "Erk" Russell's Junkyard Dog defence at Georgia under Vince Dooley. Russell subsequently took this defense to Georgia Southern when he was the Eagles' caput coach.^[17]

4-3 monster alignments [edit]

The other form of a 4-4 is seen in teams that use a iv-3 base of operations set along with an overshifted secondary. Instead of 2 cornerbacks and two safeties, these teams use ii cornerbacks, one free rubber, and 1 monster or rover dorsum. This monster is a hybrid, who can play linebacker techniques when needed or pass protection when needed. An example of this approach is seen in the Eagle defense of Ron Vanderlinden, who was a defense coordinator at Penn State.^[18]

References [edit]

1. ^ ^{a b} Faurot, Don, Secrets of the "Divide T" Germination, Prentice-Hall, 1950, pp. 272-274.
2. ^ ^{a b c d e f} Foster et al.
3. ^ Johnston, p 126, p. 136.
4. ^ Bible, p. 156.
5. ^ ^{a b} Smith, Chapter 1.
6. ^ ^{a b} Arnsparger, p. 56.
7. ^ Jones and Wilkinson, Chapter 6.
8. ^ Roman, p. xvi.
9. ^ Roman, p. xv.
10. ^ Roman, p. xvi.
11. ^ Roman, p. xv.
12. ^ Roman, p. 17.
13. ^ Roman, p. 89.
14. ^ Roman, p. 17.
15. ^ Beamer and Clark, pp. 80-82
16. ^ DrB Inside the Virginia Tech Defence force. September 28, 2011. Shakin' the Southland, retrieved June 28, 2013.
17. ^ Russell, pp. 133-141.
18. ^ Vanderlinden, Chapters 3-6.

Bibliography [edit]

Arnsparger, Bill, Armsparger's Coaching Defensive Football game, St Lucie Press, 1999.

Beamer, Frank and Clark, Michael, Pressuring Without Risk in Defensive Football game Strategies, American Football Coaches Clan, 2000

Bible, Dana Ten. Title Football, Prentice-Hall, 1947.

Foster, Bud, Cavanaugh, Jim, West, Lou and Wiles, Charlie Virginia Tech'due south Attack Defence force in Proceedings, 76th AFCA Convention, American Football Higher Association, 1999.

Johnston, James Westward., The Wow Boys, University of Nebraska Printing, 2006.

Jones, Gomer, and Wilkinson, Bud, Modernistic Defensive Football, Prentice-Hall, 1957.

Roman, Joe, The Complete Guide to Installing the 44 Split Defense force, Coaches Choice, 1999.

Russell, Erskine, Eliminating Options With the Junkyard Viii in Defensive Football Strategies, American Football Coaches Association, 2000.

Smith, Homer, Football Autobus's Complete Offensive Playbook, Parker Publishing, 1987, Chapter one.

Vanderlinden, Ron, Football's Hawkeye and Stack Defenses, Human Kinetics, 2008.

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Source: https://en.wikipedia.org/wiki/4%E2%80%934_defense

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