Veteran Alfred Morris earned a roster spot as insurance after second-year players Joe Williams and Jeremy McNichols failed to impress coach Kyle Shanahan and the organization. Morris will be paired with Matt Breida to share the duties in the backfield as McKinnon spends the season rehabbing to be at full strength for 2019.
As the story said, the two RBs are contrasts in styles and experience. It went on to say it could be a weekly adjustment, as Shanahan looks for the right matchups against a given opponent, beginning Sunday against the Minnesota Vikings. Right now, neither Morris nor Breida knows exactly what to expect.