Walker had seven tackles (five solo) in Sunday's 38-6 loss to the Ravens.
The seven tackles Sunday were a season-high for Walker, who has played in at least 93 percent of defensive snaps since Week 3. He lost the starting safety job due to the emergence of Brian Branch but retook that mantle after C.J. Gardner-Johnson landed on IR after Week 2. Walker and the Lions will look to get back on track in Week 8 against the Raiders at home.