The Marlins have decided to retain manager Don Mattingly, but will make several changes to his coaching staff. Catching coach Brian Schneider and bullpen coach Dean Treanor will both depart, per MLB.com’s Joe Frisaro (via Twitter).
At this point, it’s not entirely clear whether any other changes will be made. The organization is still making its final calls on the remainder of the coaching staff, per Frisaro, with “several … expected back.” Bench coach Tim Wallach had already decided to leave of his own volition.
Schneider, a former big league receiver, has been in his role since the start of the 2016 season. The 42-year-old’s only other non-playing experience came as a minor-league manager in the Miami organization.
As for Treanor, he has a long history of working as a minor-league pitching coach and Triple-A manager. He had served as the bullpen coach for three seasons under Mattingly.