D’Brickashaw Ferguson
In the 2006 NFL Draft, D’Brickashaw Ferguson was an offensive lineman who started for 10 seasons with the New York Jets. His fans were shocked to hear that he was retiring but he explained that he could not play at the level he wanted so he went in a different direction.
Christan Okoye
The Chiefs fullback and two-time Pro Bowler and first-team All-pro in 1989 lasted five seasons because he then required surgery on both knees in 1992. He also admits that he felt like Football started to become too much like a job.