What is nickel defense?

Nickel defense is a defensive formation in American football that involves replacing one of the linebackers with a fifth defensive back (nickel back). This is typically used in passing situations when the defense needs to cover more receivers and defend against the pass.

The nickel defense is commonly used to combat spread offenses or when the offense has multiple receivers on the field. By adding an extra defensive back, the defense can match up better with the additional receiving threats and prevent big plays in the passing game.

The nickel back is usually a smaller, quicker defensive back who excels in coverage and is able to keep up with faster wide receivers or tight ends. The nickel back will often line up in the slot or cover the slot receiver, while the other defensive backs cover the outside receivers.

Overall, the nickel defense allows for more flexibility and coverage options in the secondary, making it a valuable tool for defenses to use in certain situations.