Glad to oblige:
The 3–4 defense was originally devised by
Bud Wilkinson at the
University of Oklahoma in the 1940s as the 5–2 Oklahoma defense. The first NFL team to regularly employ the 3–4 was the
1974 New England Patriots under
Chuck Fairbanks, who employed the 5–2 for all but one of his six seasons (1967–72) as head coach of the
Oklahoma Sooners (the
1971 Sooners employed the 4–3).
The
1972 Miami Dolphins were the first team to win a Super Bowl with the 3–4 defense, going undefeated and using number 53,
Bob Matheson, as a down lineman or rushing linebacker. Matheson replaced defensive tackle
Bob Heinz, shifting
Manny Fernandez to nose guard.
In 1976,
Oakland Raiders coach
John Madden switched to the 3–4 after injuries decimated the team's defensive line. The Raiders went 13–1 in the regular season and defeated the
Minnesota Vikings in
Super Bowl XI.
The Dolphins shifted full-time to the 3–4 under Arnsparger in 1977, with
Bob Baumhower anchoring the defense as a perennial All-Pro nose tackle.
The
Pittsburgh Steelers have used the 3–4 as their base defense since
1982, the season after
Hall of Fame defensive tackle
Joe Greene and end
L. C. Greenwood retired. In fact, the Steelers were the only NFL team to use the 3–4 defense during the
2001 season, but finished the season as the number one defense in the NFL.
[2] It is believed that the Steelers' success with the 3–4 defense is the primary reason why many NFL teams have started returning to the formation.
[3]
When the Raiders defeated the
Philadelphia Eagles in
Super Bowl XV, it marked the first Super Bowl in which both teams used the 3–4 as their base defense. Also notable several years later, the
Big Blue Wrecking Crew, the defensive unit for the
1986 New York Giants who won
Super Bowl XXI, was a 3–4 defense and featured all-time great
Lawrence Taylor at right outside linebacker and fellow Hall of Famer
Harry Carson on the inside. By the mid-1990s, only a few teams used a 3–4 defense, most notably the
Buffalo Bills and
Pittsburgh Steelers.
[4]