Baseball Joe Matson's great ambition is to become a professional baseball pitcher. The Baseball Joe series follows his career as he seeks to attain his goal. In this volume, Joe follows the wishes of his parents and attends college, and seeks to join the Yale University varsity baseball nine. Much to his disappointment, he finds that he cannot immediately do so, due to a Yale rule barring Freshmen from placement on the varsity. We follow his college adventures through his first and second years, with emphasis on his trials in making the team in year two, including the attempts of a rival pitcher to keep him off the team.