Lions placed SS Amari Spievey (concussion) on season-ending injured reserve.
Spievey suffered his second concussion of the calendar year in Week 7 against the Bears. Head coach Jim Schwartz noted the following day that the safety would be watched "very closely" from here on out. Erik Coleman will start at strong safety for the remainder of the season. Cornerback Drayton Florence was activated from injured reserve designated for return in a corresponding move. Spievey finishes the season with 21 tackles and will be a restricted free agent in the offseason.