The Ducks used to have terrors in the middle. In four seasons Troy Dye racked up 397 tackles and intercepted five passes. As a senior Kiko Alonso made 81 tackles and picked off four.
These guys were athletic and determined. Both won Rose Bowls and went on to long careers in the NFL.
In most cases, a defense is only as good as the talent and tenacity at inside linebacker. That's where the pace is set and a unit gets its identity and gritty heart.
Linebackers have to be athletic, mobile and love contact, a potent blend of effort and talent.