The San Francisco 49ers had ten defensive linemen (DTs, DEs, and LEOs) rostered on Week 1 of the 2017 season. Two were listed on the Injured Reserve list, with Ronald Blair marked to return. By the end of the season, 16 different linemen had seen game time - including a paltry 28 special teams only snaps for LEO Pita Taumoepenu. Weeks fifteen and sixteen each showed eleven defensive linemen on the roster, plus Pita T. who was listed with the SAM linebackers.
Of those sixteen who saw snaps, seven are no longer under contract with the team.