Zack Kelly shares his journey from being an undrafted free agent to making his MLB debut with the Boston Red Sox. He discusses the challenges of being a Division II player and the difficulties in getting scouted. Zack talks about his mentality during spring training and his first impressions of Alex Cora. He shares his experience in the big league camp and observing veteran players. Zack also talks about his MLB debut and the emotions he felt. He discusses his pre-workout routine and the rehab process after an injury. Finally, he talks about his offseason work and developing new pitches.