Eagles Must Add Speedy, Versatile Defenders Posted on The Eagles defense needs to add some versatile defensive players, if they want to return to the level of being one of the top NFL defenses. I call them “Tweeners”, which is short for between a defensive lineman, a linebacker and a defensive back. A “Tweener” is a defensive player with tremendous versatility, who can do everything required of a defensive lineman, linebacker or defensive back. He has the pass rushing skills of a defensive lineman, the tackling and run stopping skills of a linebacker, plus the pass coverage skills of a cornerback. He’s tough. He’s quick. He’s smart and he is a playmaker.