Sports in Phoenix mirroring the major league teams which play in the Cactus League. The only two Cactus League teams which do not have a rookie league team playing in Phoenix are the Kansas City Royals and the Colorado Rockies. The Arizona Fall League is an off-season league run by Major League Baseball, and consists of six teams made up of some of the most talented minor league players in baseball. Unlike baseball's minor leagues, like AAA teams, the teams are not affiliated with a single major-league team. Each of the six teams is affiliated with five major league teams, all of which
Baseball in the United States others. An extensive minor league baseball system covers most mid-sized cities in the United States. Minor league baseball teams are organized in a six-tier hierarchy, in which the highest teams (AAA) are in major cities that do not have a major league team but often have a major team in another sport, and each level occupies progressively smaller cities. The lowest levels of professional baseball serve primarily as development systems for the sport's most inexperienced prospects, with the absolute bottom, the rookie leagues, occupying the major league squads' spring training complexes and making no effort to earn money on their