Mitchell rushed 18 times for 137 yards and was not targeted in the passing game in Sunday's 33-22 win over Chicago.
Mitchell dominated the backfield touches (18 of 21) for the second consecutive week since returning from injured reserve, cementing his role as the 49ers' lead back going forward. It was the rookie sixth-rounder's third game with both 100-plus yards and a touchdown in five starts this year. Mitchell has elevated himself into must-start territory heading into a matchup against the Cardinals in Week 9.