Against San Francisco this week Duncan had four tackles. Last week against the Cowboys Jamie had seven tackles in a losing effort.
Duncan was signed by the 49ers in March after a four year stint with Tampa Bay.
Throughout his NFL career Duncan has made over 200 tackles and 5 interceptions. He scored a touchdown on an intercepion return during the 2000 season for Tampa Bay.
Duncan lettered for Vanderbilt from 1995-97 and earned both All-SEC and All-American honors before being drafted by Tampa Bay during the third round (84th pick overall) of the 1998 draft.