• You need to understand the receiver and the offense you're facing that week. Know his tendencies and what routes he runs out of what formations. This will help you understand the concepts of what the receiver is going to give you on a given play, and make you that much better defending him.

    Antonio Cromartie: You need to understand the receiver and the offense you're facing that week. Know his tendencies and what routes he runs out of what formations. This will help you understand the concepts of what the receiver is going to give you on a given play, and make you that much better defending him.
    Source: www.nfl.com