NFL

Knox missed the entire 2012 season thanks to fractured vertebrae, raising the possibility that his rookie deal would be extended by one year. It's not happening. The Bears are simply moving on, a sign that Knox still hasn't regained the raw speed and athleticism that made him such an intriguing deep threat and kick return prospect. He'll have to prove his health before latching on elsewhere. The spinal fusion surgery Knox underwent roughly 14 months ago has put his career in serious jeopardy.