Lions placed DT Corey Williams (knee) on injured reserve, ending his season.
Williams has missed six games since undergoing what was billed at the time as minor knee surgery. He finishes a disappointing contract season with nine tackles, two sacks, and a forced fumble. Although the 32-year-old Williams is highly regarded by the coaching staff and teammates, his Detroit future is up in the air following the emergence of 2011 first-rounder Nick Fairley.













