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
Major League Baseball rivalries Major League Baseball rivalries Rivalries in the Major League Baseball have occurred between many teams and cities. Rivalries have arisen for many different reasons, the primary ones including geographic proximity, familiarity with opponents, various incidents, and cultural, linguistic, or national pride. In the "Original 16" era (1901–60), there were eight teams in each league and teams in each league played each other 22 times a season. With the second American League incarnation of the Washington Senators (now the Texas Rangers) and the Los Angeles Angels entering play as expansion teams in , MLB increased the total number of games American