49ers keep 5 RBs

The 49ers kept 5 RBs on their initial 53-man roster: Elijah Mitchell, Jeff Wilson, Trey Sermon, Ty Davis-Price and Jordan Mason. Mitchell is the clear lead back heading into Week 1, but keeping 5 RB is another sign that San Francisco is worried about Mitchell holding up. Unfortunately, there's no clear-cut handcuff to Mitchell at this point.