The San Francisco 49ers have an uncertain passing game entering 2013 due to the injury to Michael Crabtree.

“San Francisco must get more from (tight end) Vernon Davis and LaMichael James, although I realize he is out for about three weeks with ankle injury,” ESPN's Matt Williamson said. “I see James as a very Darren Sproles-like player for this offense this season. It would be a massive help. (San Francisco coach Jim) Harbaugh certainly has the creative and sharp offensive mind to make that happen. I also could see (running back Kendall) Hunter getting more receptions as well. Davis has to step up huge and become a true No. 1 receiving option, which he is physically capable of, but few TEs can make that distinction. As for Boldin, he rarely truly gets open and instead is just terrific at battling for the ball in the air and coming down with it. Ideally, he would be my third target, but unfortunately, San Francisco probably will not have that luxury. I do expect them to have an elite ground game again.”