5. Calais Campbell
Given his immense size (6-foot-8, 300 pounds) and advanced age, it’s tough not to think of Campbell as some kind of dinosaur. He’s been a disruptive force since he became a starter for the Cardinals in 2009, his second year in the NFL. Campbell has shown sensational staying power, making the Pro Bowl five of the last six seasons. Even at 33 years old, the already-loaded Ravens defense getting him for a fifth-round pick is an absolute robbery.