Mitchell won't play Week 4

49ers RB Elijah Mitchell (shoulder) will not play vs. the Seahawks today, ESPN's Adam Schefter reports. Mitchell put in 3 limited practices this week but is still dealing with a lot of pain. RB Trey Sermon got just-ok usage with Mitchell out last week, playing 59% of San Francisco's offensive snaps and tallying 10 carries and 3 targets. See where Sermon sits in the updated RB Rankings.