The Colts have released 31-year old DT/DE Raheem Brock.  Brock played in all 16 games for the Colts last season and he had 32 tackles, 1 tackle for a loss, 3.5 sacks and he defensed 1 pass.  Brock played in 120 games in his 8 years with the Colts and he finished up with 288 tackles, 28.5 sacks, 16 passes defensed and 11 forced fumbles.  The Colts will try to find a younger, cheaper backup for defensive lineman in 2010.