 The first non-professional baseball leagues played at Campo Atlético Charles H. Terry.However, after the formation of the "Liga de Béisbol Semiprofesional de Puerto Rico" (Puerto Rico Semiprofessional Baseball League) in 1938, the sport had mature enough that it became necessary to plan on building a new stadium.This need was further exacerbated on 14 September 1941 when the League became a professional-level league.