StatsLLC: Oct 26 / 12:00a ET
News: Cook is out for the season.
Impact: Cook is on injured reserve with a quadriceps injury.
Rotowire: Oct 25 / 10:26a ET
News: Cook (hamstring) was placed on injured reserve Saturday, ESPN's Adam Caplan reports.
Impact: Inked to a one-year deal in March, Cook saw limited action in the secondary for San Francisco, with the majority of his playing time coming on special teams. The 27-year-old Cook recorded just six solo tackles in six games this season, and for his career (40 games), he has just one sack and zero interceptions.