Veteran Alfred Morris, who was signed two weeks ago, could be the starter when the 49ers open the season. Matt Breida is likely to be the backup, with special-teams ace Raheem Mostert available in emergency situations.
With Jerick McKinnon suffering what the coaching staff fears is a significant knee injury, both Breida and Morris should be owned in all leagues moving forward. Our rankings will be constantly updated, as the latest news from this backfield unfolds. Whoever the starter is will have meaningful fantasy value with Kyle Shanahan's long track record of RB success.