The Washington Redskins have placed defensive tackle Chris Baker on injured reserve, a league source confirmed on Monday.
Baker had opened the 2011 season on the Redskins' practice squad and was added to the 53-man roster last week. Baker was not active for Sunday's 34-27 loss to the New England Patriots, so it's unclear when he sustained an injury.
To replace Baker, the Redskins have signed former Denver Broncos tight end Richard Quinn.
A 2009 second-round pick out of North Carolina, Quinn has one reception for nine yards in 29 career games, including four starts last season for the Broncos. Quinn was released by the Broncos with an injury settlement in August. Since then, the 6-foot-4, 255-pound Quinn has worked out for seven teams, including the Redskins on October 5.