SANTA CLARA, Calif. (AP) -San Francisco cornerback Tarell Brown has received a three-year contract extension that takes him through the 2013 season.

Brown, a fifth-round draft pick in 2007 out of Texas, is a backup in the 49ers' secondary who competed for a starting job during training camp before injuring his toe and missing time.

Brown received increased playing time last season at nickel back and also contributed 16 tackles on special teams.