The Rams had a vacancy at the position after the NFL suspended Gregg Williams for his role in the bounty scandal while the defensive coordinator with the
New Orleans Saints. Williams' son Blake, the Rams linebacker coach, called the defensive plays during the suspension. Blake Williams and the team parted ways earlier in the month.
Ryan will join the staff of a defensive-minded coach in Jeff Fisher. Fisher played for Rob's father Buddy in Chicago and coached under him in Philadelphia.
Fisher won't be the only familiar face for Rob in St. Louis. Rob's brother, Jim Ryan, is an attorney who has lived in St. Louis for the past 20 years.