The 49ers' depleted running back room has added some much needed depth ahead of Week 3.
Johnson, who joined the club on Sept. 14, looks to provide the Niners with a punch of power alongside presumed rookie Trey Sermon, the presumed starter, and backups Trenton Cannon and Jacques Patrick. Rookie Elijah Mitchell isn't expected to play as he is currently listed as doubtful with a shoulder injury.
Should Johnson see the field on Sunday, it will be his first regular season appearance since Week 17 of last season. The former Lions standout logged 52 carries for 181 yards and two touchdowns, along with 19 receptions for 187 yards and a touchdown, in 16 games played (two starts).