Trey Sermon, RB (SF)

Puts in another limited practice

Sermon (concussion) practiced in a limited capacity Thursday, Jennifer Lee Chan of NBC Sports Bay Area reports.

For a second straight session, Sermon had a cap on his reps as he wore a blue non-contact jersey due to the concussion he sustained this past Sunday in Philadelphia, according to David Lombardi of The Athletic. Sermon will have to complete the NFL's protocol for head injuries to make himself available Week 3 against the Packers, but he appears to be the best bet of the 49ers' regular running backs to be active Sunday. With Raheem Mostert (knee) on IR, JaMycal Hasty out several weeks due to a high ankle sprain, and Elijah Mitchell working his way through a shoulder stinger, Sermon may be in line for his first career start this weekend. Sermon and the other three aside, San Francisco has emergency options lined up in Trenton Cannon and Jacques Patrick -- both are on the active roster -- while Kerryon Johnson and Chris Thompson are candidates to be elevated from the practice squad.

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Raheem Mostert

RB | SF

Checks in for surgery

San Francisco head coach Kyle Shanahan said Mostert will undergo surgery Tuesday to address chipped cartilage in his left knee, David Lombardi of The Athletic reports.

Jimmy Garoppolo

QB | SF

Better odds to start Week 7?

Garoppolo (calf) may have a better chance to start after the 49ers' Week 6 bye following news that Trey Lance sprained his left knee during Sunday's 17-10 loss in Arizona, David Lombardi of The Athletic reports.

Trey Lance

QB | SF

Picks up sprained knee

Lance suffered a left knee sprain during Sunday's 17-10 loss at Arizona, leaving his status for the 49ers' next game Week 7 against the Colts, David Lombardi of The Athletic reports.

Trey Sermon

RB | SF

Reverts to backup role

Sermon was only on the field for two offensive snaps (three percent) Sunday, finishing with one carry for seven yards in a 17-10 loss to Arizona.