AP

Packers linebacker Desmond Bishop will not play at all this season.

Bishop, who had surgery for a torn hamstring 10 days ago, has been placed on injured reserve, ending his 2012 season. Bishop started 13 games last season, and losing him is a big blow as Green Bay tries to improve its defense this season.

In getting their roster down to 75 players, the Packers also placed running back Du’ane Bennett, tight end DeMarco Cosby, guard Ray Dominguez, defensive end Johnny Jones and receiver Shaky Smithson on injured reserve. Tight end Andrew Quarless and linebacker Frank Zombo were placed on reserve/physically unable to perform.

The Packers also released fullback Jon Hoese and defensive end Jarius Wynn.