With the 2024 baseball season taking shape, roles are solidifying and some interesting bullpen changes are occurring. A former closer turned starter records a save, while committees form in other teams. Miami Marlins pitcher A.J. Puk looks poised to take over as closer. Meanwhile, Hector Neris of the Chicago Cubs continues to defy expectations as a closer despite poor numbers. Michael Kopech of the White Sox remains a solid closer option. Other bullpen and closer news includes updates on various players and their performances.