Grant Hartwig is a homegrown reliever for the New York Mets who looked to Adam Ottavino for guidance during his time in the big leagues last season. The Mets have had trouble developing pitchers, but Hartwig could become a success story if he improves on his 2023 performance. Ottavino embraced the role of bullpen mentor and passed along lessons from his own mentors to Hartwig and other young pitchers on the team.