Johnson was elevated from the Raiders' practice squad Saturday.
Johnson joined the Raiders' practice squad Nov. 18, just two days after being let go by the Jaguars. He appeared in five games with Jacksonville this season and 12 with the Chargers last season. The 25-year-old has 22 catches on 31 targets for 414 yards and 3 touchdowns across those 17 games. He'll look to provide depth in the Raiders' wide receiver group Sunday against the Chiefs.