Courtney Brown
Cleveland thought that they struck gold in 2000 when they drafted the pass-rushing Brown from Penn State. The defensive end was excellent during his time with the Nittany Lions. The Browns believed that he would be a solid building block as they moved forward. He had a decent rookie season as he settled quickly with the franchise (via Browns Nation).

But sadly, it went downhill quickly for Brown because he had serious fitness issues. Injuries took their toll on him for the rest of his career and he never became the elite starter they dreamed of. Brown spent more time on the injured reserve list than on the football field. Unfortunately, fans never saw the best of him and there was a lot of potential.