"Kelly would like to have defensive ends that measure at least 6'6" (seventh-round pick Brian Mihalik, out of Boston College, stands 6'9"), and he wants stout nosetackles," SI's Greg Bedard writes. "The most important characteristic? Knees with a circumference of at least 18 inches -- an identifier of guys who are built solidly in the lower body and thus, the Eagles believe, less susceptible to injuries.