Spears (hamstring) has been ruled out ahead of Sunday's contest against the Lions, John Glennon of NashvillePost.com reports.
Spears managed to practice in limited fashion all week, but it wasn't enough to clear him ahead of a difficult matchup against the Lions. Expect Tony Pollard to once again see a healthy workload one week after racking up 18 total touches in the absence of Spears.