Updated

The Jacksonville Jaguars have re-signed running back Keith Toston and waived rookie linebacker Brandon Marshall again.

Toston spent the preseason with the Jaguars before being waived on final cuts. He was re-signed last week and returned two kickoffs for 49 yards against Green Bay. He was waived Tuesday, replaced on the roster by Marshall.

Toston could be active again Sunday against Detroit since Maurice Jones-Drew (foot) is out and backup Montell Owens (shoulder) has missed more practice time.

Maybe more pressing for Jacksonville is the health of its secondary. Safety Dwight Lowery (ankle) has been ruled out against the Lions and starting cornerbacks Derek Cox (back) and Rashean Mathis (groin) sat out practice Thursday. Cox and Mathis were limited Wednesday, but it's unclear if they had setbacks.