The Baltimore Ravens actually lost quite a number of assistant coaches this offseason, who had the opportunity to take jobs at higher positions elsewhere—one of them even landed the head coaching job with the Houston Texans. While they still have their coordinators in place, much else has changed.
They did bring in one name that should be familiar to everybody—Rob Ryan. They hired him to be their inside linebackers coach after losing the former man in the job. He is, of course, the brother of Rex Ryan, who was also a linebackers coach for the team before earning his way up to defensive coordinator, which ultimately landed him a head coaching job with the New York Jets.