Mostert expected to miss 8 weeks

Niners RB Raheem Mostert has chipped cartilage in the knee he injured Sunday. ESPN’s Nick Wagoner reports that he’ll land on IR and is expected to miss 8 weeks. Elijah Mitchell took control of the backfield after Mostert left in Detroit, with JaMycal Hasty involved as well. We’d bet on Trey Sermon being active at Philly in Week 2. We’ll see about the workload split. Obviously, we have to assume that Mitchell will lead the way again — barring reports to the contrary.