I suspect he could have played through the injury, but they just wanted to test out the 3 rookies as well as not take any chances with Montgomery in the preseason. It seems like some people miss having a big clod like Lacy carrying the ball. He wasn't exactly immune to injuries either. Montgomery was exactly the kind of runner I wanted when he took over last year. We'll see what happens on injuries, but I doubt he's any more likely to get hurt than some fat slow guy.