ALLEN PARK, Mich. (AP) - The Detroit Lions have hired Marcus Robertson to be their secondary coach.

He was on the staff with the Tennessee Titans from 2007-11, beginning as an assistant secondary coach and eventually becoming the secondary coach.

Robertson played 12 NFL seasons, his first 10 with the Houston-Tennessee franchise before finishing his career with Seattle.

After his playing career ended, he returned to the Titans as director of player development.