CHICAGO -- The Chicago Bears have elevated running back Armando Allen to the active roster from the practice squad and placed running back Lorenzo Booker on injured reserve.
They also waived linebacker Patrick Trahan on Saturday.
Allen appeared in two games for the Bears last season, carrying 15 times for 48 yards. Booker sat out practice this week after sustaining a head injury in the final preseason game against the Cleveland Browns.
Trahan appeared in five games for Chicago last season.
The Bears open against the Indianapolis Colts on Sunday.
Copyright 2012 by The Associated Press