49ers new starting RB remains out of Week 15 practice with foot injury

Still no Isaac Guerendo in practice for the 49ers.

The San Francisco 49ers may be down to their fourth-string running back Thursday against the Los Angeles Rams.

Head coach Kyle Shanahan on Tuesday told reporters in a pre-practice press conference that rookie running back Isaac Guerendo wouldn’t participate in the day’s session as he continues recovering from a foot sprain he sustained in the team’s 38-13 win over the Chicago Bears in Week 14.

Guerendo was in the starting lineup for the first time as a pro because of a knee injury for RB Christian McCaffrey and an ankle injury for RB Jordan Mason. Both players were placed on IR and opened the door for Guerendo, a 2024 fourth-round pick, to step into the starting lineup. He posted 128 scrimmage yards and two touchdowns before exiting against Chicago.

The 49ers didn’t have a practice Monday, but they released a projected participation report that listed Guerendo as a non-participant. It’s not a surprise he’s a non-participant again Tuesday. Shanahan on Monday said Guerendo’s status for Thursday is up in the air.

“The only idea I have is what I told you guys,” Shanahan said via conference call. “He’s got a foot sprain and definitely couldn’t go today. And so, we’ll see if he can go on Thursday, but definitely can’t go (Monday). It’s a quick turnaround, so we’ve got to evaluate him hard each day. I’ll be surprised if he does much tomorrow, but hopefully Thursday will be enough time for him.”

It’s not a great sign that Guerendo hasn’t been able to go the first couple days of the week. The good news for the 49ers is they don’t ultimately have to make a decision until 90 minutes before kickoff unless they rule him out on Wednesday’s injury report.

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