Lions S Tracy Walker is active for today's game against the Cowboys. He missed the past 2 games with a knee injury and managed just a limited Friday practice this week. Walker remains a risky IDP option. He has also ranked among the position's top fantasy scorers when healthy this season. DT Damon Harrison (groin) is also active after entering the day questionable. DE Romeo Okwara (groin) is inactive.

S Tracy Walker remained a starter for the Lions in Week 3, but his playing time fell from 98% and 100% in the first 2 games to just 67% in the loss to Baltimore. Dean Marlowe and Will Harris tied at 76% to lead the position for the Lions. Each played 5 more snaps than Walker. We'll see where this goes, but it'll be tough to trust Walker against the Bears next Sunday.

The Lions have ruled S Tracy Walker out for Sunday's game against the Vikings. Walker missed every day of practice this week, but it's still a surprising situation after Walker played every snap in the Week 8 loss to the Colts. Walker's absence improves the matchup for Vikings TE Irv Smith. S Will Harris figures to step in for Walker.

Lions S Tracy Walker entered Week 11 questionable with a right knee injury that cost him the previous 2 games. He left Week 11 early with a right knee injury. HC Matt Patricia said afterward that he didn't know whether it was the same injury, according to ESPN's Michael Rothstein. We'll see about the outlook here, but IDP owners should expect to miss Walker for at least the next game. Even with Walker active against the Cowboys, Tavon Wilson and Will Harris still started at safety. Wilson looks like a full-timer whether Walker's in or out. Harris' role depends on Walker's involvement.

Lions S Tracy Walker left in the 3rd quarter of Sunday's win over the Giants with a right knee injury and did not return. HC Matt Patricia said after the game that Walker would be in for further evaluation Monday. Rookie S Will Harris saw the biggest playing-time spike, matching starter Tavon Wilson at 82% of the defensive snaps. Harris would likely start in Walker's place if the incumbent misses further time.