49ers HC Kyle Shanahan said Monday that RB Trey Sermon will be active for Week 2. Sermon was a surprise healthy scratch for the opener after looking like a top 2 RB on the depth chart throughout the offseason. But with RB Raheem Mostert out for the season, San Francisco is down to Sermon, Elijah Mitchell and JaMycal Hasty on the active roster. (Plus Kerryon Johnson on the practice squad.) Of course, it remains to be seen how touches will be divvied among those guys. Sermon would be a risky Week 2 fantasy play -- but he should certainly remain on rosters.