As fans get ready to watch the Eagles and the Chiefs in the Super Bowl on Feb. 9, let's break down the differences between Cover 1 and Cover 3.

Whether Seattle is in cover 3 sky with the down safety in one of the two outside underneath zones, ... Kam’s pass coverage assignment dictated that he must match the seam route from the tight end.

Is Vikings coach Mike Zimmer the foil to the 49ers’ Kyle Shanahan? Zimmer, 63, is a veteran defensive-minded head coach who has been running his own take on a pattern match-based system for ...

Clip is essentially Cover 2 with man-match principles rather than zone. The corner to the clip side lines up inside of No. 1 and looks for any routes going outside from the No. 2 and No. 3 receivers.