Thoughts on why Rams' Quinn not active

The St. Louis Rams will be without tight end Michael Hoomanawanui for Week 1, no surprise given concerns over aggravating his calf injury.

It's an upset, at least to me, that 2011 first-round draft pick Robert Quinn is also not active for the Rams against Philadelphia. The Rams drafted Quinn knowing they would not need him to start right away. But there was never any indication Quinn would be relegated to inactive status.

Two other NFC West first-rounders, James Carpenter of Seattle and Patrick Peterson of Arizona, are starting Sunday. Another, Aldon Smith of San Francisco, is expected to open his career in a reserve role.

Quinn might need longer to develop given that he did not play during his final season at North Carolina. If he is healthy, the Rams' decision to name him inactive reflects strong confidence in their depth along the line. Also, in leaving defensive lineman Eugene Sims active instead, the Rams could have an eye toward special teams. Sims has more overall value in that area.

The Rams' Greg Salas was active over fellow rookie receiver Austin Pettis, likely for similar reasons.