Baker (heel) is listed as active Sunday at Seattle, Darren Urban of the Cardinals' official site reports.
Baker has been banged up the past few weeks, dealing with a concussion and knee and heel injuries. He managed just one limited session during Week 11 prep, but it was enough for him man his typical role as Arizona's starting free safety. On the season, Baker has accumulated 59 tackles, two interceptions and a fumble recovery in 10 appearances.