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6–2 defense
In American football, the 6–2 defense is a defensive alignment consisting of six down linemen and two linebackers.
== Historical ==
The 6-2 is a defense that became popular in the 1930s due to the demands of the improving passing attacks of the time. In the early 1930s, pro football's passing rules were liberalized.〔Halas, pp. 167-170.〕 By the late 1930s, the two standard defenses in college and the NFL were the 6-2 and the 5-3. The 5-3 was regarded as a pass defense, and the 6-2, for most teams, was the base defense.〔Owen, p. 183.〕〔Bible, pp. 152-159.〕〔Zimmerman, ''New Thinking Man's Guide to Pro Football'', p. 130.〕〔Brown and Clary, pp. 82-83〕
By the 1940s, you could see this defense overshifted or undershifted.〔Bible, p. 153〕 Pass defenses were man-to-man, zone, or a combination, the three man secondary lending itself to a Cover 3.〔Bible, pp. 156-159.〕 Players would pull out of the line, to fall into short zones, as zone blitz teams do today, rushing four and having four players in short zones.〔Bible, p. 156.〕 Secondary rotations were common as an adjustment to a "man in motion" from the T.〔
The usage of the 6–2 defense waned as the T formation became more popular and more effective.〔Zimmerman, ''The Past is Prelude''.〕 By 1950, the base defenses in the NFL were all five man line defenses, either the 5-3 or the 5-2 Eagle.〔Carroll et al., p. 465.〕 8 man front defenses were still popular in the college ranks, and the six man line evolved. The defensive lines grew tighter, to gain numerical advantages over the five interior linemen.〔Smith, Homer, pp. 1-2.〕 Gap control concepts were introduced, and to defend against the original option offense, the Split-T, rotating backfields were introduced.〔Smith, Homer, p. 3.〕
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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