Marlins manager Don Mattingly at Winter Meetings (part 1): On changes to coaching staff, status of J.T. Realmuto

Miami Marlins manager Don Mattingly holds court Monday at MLB's Winter Meetings, running through some of the changes to the coaching staff for the coming season as well as how J.T. Realmuto is handling the trade rumors swirling around him.

Major League Baseball J.T. Realmuto Miami Marlins