The Ravens have acquired 31-year old DT/DE Marques Douglas from the Tampa Bay Bucs for a late 2009 Draft Pick and a conditional one in 2010.  The Ravens acted quickly to replace injured Dwan Edwards and they hope that Douglas comes through for them.  Douglas played in all 16 games for the 49ers last season and he made 72 tackles, had 3 interceptions and defended 3 passes.  Douglas has now played in 88 games in his NFL career and he has made 339 tackles, has 19 sacks, forced 6 fumbles and he defensed 10 passes.  This was a solid move for the Ravens as Douglas should help the defense especially against the run.