The Raiders will be without 34-year old DE Greg Ellis indefinately due to recent arthroscopic knee surgery.  He has played in all 8 games for the Raiders so far this season and he has 18 tackles, 4 sacks, 1 tackle for a loss, 1 forced fumble and he has defensed 1 pass.  Rookie Matt Schaughnessy and Trevor Scott will try to step up while Ellis is out.  Schaughnessy has played in all 8 games for the Raiders this season and he has 10 tackles, 1 tackle for a loss and 1 sack.  Scott has played in all 8 games for the Raiders and he has 15 tackles and 2 sacks.  Ellis is the co-leader in sacks on the Raiders with Richard Seymour, but Schaughnessy and Scott should do a decent job replacing him.