Rams RB Darrell Henderson injured his thumb in Monday's practice. Both NFL Network's Ian Rapoport and ESPN's Adam Schefter report that it's a minor sprain. Schefter adds that Henderson is expected to be ready for Week 1. It's still not an ideal development for a guy who has had trouble staying healthy -- and is now being counted on in an expanded role. We'll keep you updated on Henderson's status. There's no clear-cut handcuff to Henderson right now after RB Jake Funk started over RB Xavier Jones in the 2nd preseason game. The Rams could still add to the backfield before the start of the season.