Professional sports teams in Arizona Professional sports teams in Arizona Arizona has four Major League sports teams, all within the Phoenix metropolitan area, plus a professional WNBA team. The Arizona Diamondbacks are a professional baseball team based in Phoenix, Arizona. They play their home games at Chase Field. They were founded in 1998 as an expansion team in the National League's West Division of the MLB. They became the fastest expansion team to win a World Series title (four seasons) when they beat three-time defending champ the New York Yankees in 2001. The Phoenix Suns play in the NBA's Pacific Division and are the only
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