Casey Kreiter will be out at least the next two games with a calf strain he suffered in practice . The Broncos aren ' t comfortable with letting Billy Winn or AJ Derby take over LS for the next couple weeks so they signed Thomas Gafford . A quick background check on Thomas GaffordGafford , 33 , has played with five different teams since signing with the Green Bay Packers as an undrafted free agent in 2006 . His longest stint 105 games was with the Kansas City Chiefs , from 200814 . Last season he played 11 games with the Chicago Bears before closing out the year with Oakland . The Raiderssigned him last December after Jon Condo was injured in their win over the Broncos . EDIT New Broncos LS Thomas Gafford will wear No . 45 . Releasing Kilgo also means the Broncos now only have 5 DL on the roster .