No matter what the Philadelphia Eagles have done and no matter how many bodies they’ve added to what seems like a crowded room of cornerbacks, it just feels like they don’t have enough of them. You can blame injuries for that. It’s an ugly part of the NFL that the Eagles have gotten too familiar with over the last two regular seasons. To satisfy Philly’s need in the secondary, they waived a familiar face, wide receiver Shelton Gibson, and added a relative unknown, Sojourn Shelton, to their list of cover guys.