Nickel defense
Encyclopedia
In American football, a nickel defense is a defensive alignment that uses five defensive back
Defensive back
In American football and Canadian football, defensive backs are the players on the defensive team who take positions somewhat back from the line of scrimmage; they are distinguished from the defensive line players and linebackers, who take positions directly behind or close to the line of...

s, of whom the fifth is known as a nickelback. Although the modern definition of the term encompasses all formations featuring five defensive backs, the original and still most common form of the nickel defense features four down linemen and two linebackers
Linebacker
A linebacker is a position in American football that was invented by football coach Fielding H. Yost of the University of Michigan. Linebackers are members of the defensive team, and line up approximately three to five yards behind the line of scrimmage, behind the defensive linemen...

. Because the traditional 4-2 form preserves the defense's ability to stop an opponent's running game, it has remained more popular than its variants, to the extent that even when another formation technically falls within the "nickel" definition, coaches and analysts will refer to it by a more specific designation (e.g., "3-3-5
3-3-5 defense
In American football, the 3-3-5 defense is a defensive alignment consisting of three down linemen, three linebackers, and five defensive backs...

" for a lineup of three down linemen and three linebackers) that conveys more information with equal or greater conciseness.

The nickel defense originated as an innovation of Philadelphia Eagles
Philadelphia Eagles
The Philadelphia Eagles are a professional American football team based in Philadelphia, Pennsylvania. They are members of the East Division of the National Football Conference in the National Football League...

 defensive coach Jerry Williams in 1960 as a measure to defend against star tight end
Tight end
The tight end is a position in American football on the offense. The tight end is often seen as a hybrid position with the characteristics and roles of both an offensive lineman and a wide receiver. Like offensive linemen, they are usually lined up on the offensive line and are large enough to be...

 Mike Ditka
Mike Ditka
Michael Keller Ditka, Jr. is a former American football NFL player, television commentator, and coach. Ditka coached the Chicago Bears for 11 years and New Orleans Saints for three years. Ditka and Tom Flores are the only two people to win Super Bowls as a player, an assistant coach, and a head...

 of the Chicago Bears
Chicago Bears
The Chicago Bears are a professional American football team based in Chicago, Illinois. They are members of the North Division of the National Football Conference in the National Football League...

. The Nickel defense was later used by then Chicago Bears assistant George Allen, who came up with the name "nickel" and later marketed the idea as his own . The nickel defense was popularized by the Miami Dolphins
Miami Dolphins
The Miami Dolphins are a Professional football team based in the Miami metropolitan area in Florida. The team is part of the Eastern Division of the American Football Conference in the National Football League...

 (Head Coach Don Shula
Don Shula
Donald Francis "Don" Shula is a former American football cornerback and coach.He is best known as coach of the Miami Dolphins, the team he led to two Super Bowl victories, and to the National Football League's only perfect season. Shula was named 1993 Sportsman of the Year by Sports Illustrated....

 and Defensive Coordinator Bill Arnsparger
Bill Arnsparger
William Stephen "Bill" Arnsparger is a former American college and professional football coach.- Early years :Arnsparger was born in Paris, Kentucky in 1926. He attended Paris High School, and became connected with the school's longtime football and basketball coach, Blanton Collier...

) in the 1970s and is now commonly employed in obvious passing situations or against a team that frequently uses four wide receiver
Wide receiver
A wide receiver is an offensive position in American and Canadian football, and is the key player in most of the passing plays. Only players in the backfield or the ends on the line are eligible to catch a forward pass. The two players who begin play at the ends of the offensive line are eligible...

 sets on offense.

In college football, TCU
TCU Horned Frogs football
The TCU Horned Frogs football team is the intercollegiate football team of Texas Christian University. TCU competes as a member of the Mountain West Conference in the NCAA's Division I Football Bowl Subdivision, but will move to the Big 12 Conference for the 2012 season. TCU began playing football...

 is famous for using a nickel defense as its base set, typically playing three safeties and two linebackers. Current Horned Frogs coach Gary Patterson
Gary Patterson
Gary Patterson is the head coach of the TCU Horned Frogs college football team. He grew up in Rozel, Kansas and played football at Dodge City Community College and Kansas State University. Patterson is married to Kelsey Patterson . He has three sons: Josh, Cade and Blake...

 installed the nickel partly out of necessity upon finding that larger and more prominent programs, most notably those of the large public universities in Texas, were able to "recruit away" most of the large athletes who would otherwise be available to the TCU program. As it turned out, the nickel proved to be a very good set against the spread offenses proliferating throughout college football in the early 21st century.
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