Walker (oblique) is listed as questionable for Sunday's game at San Francisco, Michael-Shawn Dugar of The Athletic reports.
Walker and Zach Charbonnet (knee) are both taking the same designation into the weekend after returning to practice Thursday as limited participants. The two had been splitting snaps about 50-50 before Walker missed the past two games with an injury, though Walker had a sizable advantage when it came to carry counts. Charbonnet then dominated backfield work in Walker's absence over the past two weeks, with DeeJay Dallas barely playing as the backup until a knee contusion forced Charbonnet out in the fourth quarter of last Thursday's loss to Dallas.