Reinforcements might be on the way at the running back position.
With Elijah Mitchell, Jeff Wilson Jr., Trey Sermon and Trenton Cannon all nursing injuries, the 49ers running back room has taken a hit.
San Francisco reportedly worked out three running backs Tuesday, with second-year back JaMycal Hasty left as the only healthy player at the position.
The most notable name is Brian Hill, who served as a backup on the Atlanta Falcons to Todd Gurley in 2020 and Devonta Freeman in 2019. In 209 career rushing attempts, Hill has rushed for 982 yards and three touchdowns with 38 receptions and 313 yards in the passing game.
Jeremy Cox, an undrafted free agent in 2019, spent the 2020 season with the Denver Broncos. Dexter Williams, a sixth-round pick by the Green Bay Packers in 2019, has seven career rushing attempts for 19 yards.
Mitchell, the 49ers' starting running back, experienced concussion symptoms Monday after being cleared in Sunday's loss to the Seahawks. Coach Kyle Shanahan reported that Wilson experienced a flare-up in his surgically repaired knee during the game as well.
Cannon, who was taken off the field in an ambulance Sunday after the opening kickoff, is doing better after being diagnosed with a concussion.
"He's doing better," Shanahan said on Monday. "He's been discharged from the hospital, and he's flying home right now. Our doctors will continue to monitor him."
Wilson is expected back at practice sometime this week, while Mitchell remains in concussion protocol.