When executed properly, the Tampa 2 defense is difficult to beat, a reason for its longevity, having seen no fundamental changes since first introduced in 1996. Teams that have been successful against this defense have managed to run the ball up the middle past the defensive tackles, or throw passes in the seams between the outside linebackers and the cornerbacks (often the most effective receiver against a Tampa 2 defense is a tight end, since they often line up against this seam).