Mitchell (ribs) is active for Sunday's contest versus the Cardinals, Matt Maiocco of NBC Sports Bay Area reports.
Mitchell got on the practice field twice during Week 9 prep, both times donning a blue non-contact jersey. The rookie sixth-rounder ended up being a limited participant and entered the weekend as questionable. While Adam Schefter of ESPN reported earlier Sunday that Mitchell was in line to play -- which now is confirmed -- the 49ers aren't sure how much work the running back will be able to handle. In his five appearances (four starts) this season, Mitchell has averaged 17 touches for 92.6 yards from scrimmage per game while scoring three TDs on the ground. If Mitchell yields backfield reps to teammates, Jeff Wilson, JaMycal Hasty and Trenton Cannon are the candidates to pick up the slack, while Trey Sermon (coach's decision) is a healthy scratch.