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The Texas A&M–Commerce Lions in a nickel defense against the Adams State Grizzlies in 2015. In American football, a nickel defense (also known as a 4–2–5 or 3–3–5) is any defensive alignment that uses five defensive backs, of whom the fifth is known as a nickelback.
4–2–5 nickel defense 4–2–5. There are a couple paths to the 4–2–5. One is by removing a linebacker from the standard 4–3 to add the extra defensive back. The second is by converting the ends of a wide tackle six to safeties (the defensive ends of a wide tackle six already have pass defense responsibilities).
The 4-3 defense has 2 tackles and 2 ends; the 3-4 defense has 2 ends and 1 tackle, who is sometimes called a nose tackle (NT) to indicate the 3-4. Tackles line up inside and rely on power to stop the run, while ends line up outside and are faster and more athletic to allow them to pursue the quarterback.
The two most common formations are the 3–4 defense and the 4–3 defense, where the first number refers to the number of defensive linemen, and the second number refers to the number of linebackers (the number of defensive backs can be inferred, since there must be eleven players on the field). Thus, a 3–4 defense consists of three ...
In rare instances when a seventh defensive back is inserted, it is known as a "quarter" package (5 CB, 1 SS, 1 FS or 4 CB, 2 SS, 1 FS). [9] As with offensive formations, there are many combinations that can be used to set up a defense. Unusual defensive alignments are constantly used in an effort to neutralize a given offense's strengths.
The nickelback is the third cornerback or safety on the depth chart.Usually, the nickelback will take the place of a linebacker, so if the team had been in a 4–3 formation, the four defensive linemen would remain, alongside only two linebackers and now-five defensive backs, creating a 4-2-5 formation.
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It should not come as a surprise then that coaches from Oklahoma (Chuck Fairbanks with the New England Patriots) and Oklahoma State (Bum Phillips with the Houston Oilers) were among the first to introduce the 3–4 into the NFL as a base defense. [13] The 5–2 (or 5–4, or 3–4, or Okie, or 50 defense) is a popular defense at all levels of ...