43 Defense (disambiguation)

43 Defense may refer to:

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  NFL defensive scheme (Formations/Defenses): 4–3 defense

  A common American football defensive formation using four defensive linemen and three linebackers (often written as “4–3” or described as a “4-3 defense”).

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  NFL defensive scheme: 43 defense (linebacker-heavy “3-4 look”)

  A nickname for a specific football defensive alignment/design sometimes referred to as a “43” front/coverage look in various playbooks and media.