In The Art of Fielding who is Schwartzie? details that seem especially important for understanding Schwartzie.
In Chad Harbach's fictionalized non-fiction novel The Art of Fielding the reader learns about Henry Skrimshander, who at a young age realizes his talents as a short stop. Mike Schwartz (also known as Schwartzie) discovers the talented player and recruits him to play for Westish College. Schwartzie serves as a friend and mentor to Henry who has only focused on perfecting his skills at short stop. While driven, this has left him unable to take care of himself. Mike was an orphan who would have dropped out of school and become a factory worker if it were not for his high school footballcoach, and so he becomes a similar figure for Henry.