Taylor-Demerson (back) did not participate at the Cardinals' practice Wednesday, Josh Weinfuss of ESPN.com reports.
Taylor-Demerson is dealing with an apparent back injury after he played two defensive snaps and 15 snaps on special-teams during the team's 31-7 loss to the Seahawks in Week 2. The safety will have two more chances to return to practice before Sunday's matchup with the 49ers.