Nate Irving currently tops the Broncos depth chart at middle linebacker.
The Broncos have spent wildly to upgrade their defense, but they didn’t get in on three-down middle linebackers like D’Qwell Jackson, Karlos Dansby, Jon Beason or Daryl Smith. So they’re left with Irving, who has performed better as a strong-side linebacker than a “Mike” in his career. For now, he only has to beat out Steven Johnson and likely a draft pick to win the gig.