The 49ers have lost starting DE Kentwan Balmer for the year due to a torn right labrum.  Balmer played in 11 games last season for the Niners and he made 12 tackles.  He has now played in 27 games in his two years with the Niners and he has made 19 tackles and defensed 1 pass.  The 49ers have signed DE Baraka Atkins to replace Balmer on the roster.  Atkins played in 9 games for the Seahawks last season and he made 18 tackles, 2 tackles for a loss and he had 2 sacks.  He has now played two years in the NFL and he has 29 tackles, 1 pass defensed and 2 sacks.