CategoryHierarchies.com

Minor League Baseball refers to professional baseball teams that are affiliated with Major League Baseball clubs but are not part of the major leagues themselves. These teams serve as developmental leagues, providing opportunities for young players to hone their skills and advance to the major leagues. Minor league baseball is organized into various levels or classifications, including Rookie, Class A, Double-A, and Triple-A. Teams are grouped geographically, with the Pacific Coast League being one such grouping that includes teams primarily located on the west coast of the United States.