San Francisco 49ers’ Jaquiski Tartt (29) tackles Detroit Lions’ Kerryon Johnson (33) in the third quarter of their NFL game at Levi’s Stadium in Santa Clara, Calif., on Sunday, Sept. 16, 2018. The San Francisco 49ers defeated the Detroit Lions 30-27. (Jose Carlos Fajardo/Bay Area News Group)
SANTA CLARA – Kerryon Johnson, come on down, you’re the next contestant on the 49ers’ running back show.
The 49ers elevated Johnson from the practice squad Saturday to compensate for a wave of injuries through their first two games.
With Elijah Mitchell (shoulder) doubtful to make his second straight start, the 49ers could deploy fellow rookie Trent Sermon as Sunday night’s starting running back against the Green Bay Packers, but there are other options: Trenton Cannon, Jacques Patrick and Johnson.
The Packers made injury-related moves, too: left tackle Elgton Jenkins (ankle) and tight end Dominique Dafney (hip) were downgraded to out.
Johnson played the past three seasons with the Detroit Lions. He averaged 4.3 yards per carry (1,225 yards) but also proved a receiving threat (527 yards, three touchdowns).
“He’s done a real good job and he’s a week ahead of Jacques, which helps him,” coach Kyle Shanahan said Friday. “But he’s done a good job. He’s taken advantage of his opportunities.”
Out at least the next three games is JaMycal Hasty, who sustained a high ankle sprain in last Sunday’s win at Philadelphia. Hasty was placed on injured reserve Saturday along with…