Warner got the 49ers in the end zone for the first time on Sunday when he made a leaping grab to pick off Jacoby Brissett, landed on his back, and still got up and rumbled down the sideline for a touchdown to give San Francisco a 13-0 lead.

If Warner is forced to miss any time, it would be a devastating blow to a 49ers team that has struggled mightily with injuries all season. On the defensive side, they have already lost defensive tackle Javon Hargrave for the rest of the season and safety Talanoa Hufanga missed Sunday’s game with an ankle injury. The injury report on the offensive side includes a laundry list of stars, as Christian McCaffrey, George Kittle and Deebo Samuel have all missed time, so the 49ers will hope Warner can be back on the field in Week 5.