Arizona Diamondbacks

The Arizona Diamondbacks entered Major League Baseball in 1998 and immediately rewrote the expansion playbook. While most new franchises spend a decade in the wilderness, the D-backs -- led by co-ace tandem Randy Johnson and Curt Schilling -- shocked the baseball world by winning the 2001 World Series over the dynastic New York Yankees in a seven-game classic capped by Luis Gonzalez's walk-off bloop single. It remains one of the great upsets in postseason history and the defining moment of the franchise.

Chase Field, with its retractable roof and swimming pool in center field, is the ultimate concession to desert living -- a climate-controlled palace that allows baseball to thrive where summer temperatures regularly exceed 110 degrees. The ballpark has become a symbol of the franchise's willingness to do things differently, embracing spectacle alongside competition in a market that had no professional baseball tradition before the D-backs arrived.

The franchise has cycled through eras of contention and rebuilding with unusual speed, reflecting the boom-and-bust rhythms of Sun Belt expansion. A second generation of success arrived in the early 2020s, when a young, homegrown core powered a surprising run to the 2023 World Series. The Diamondbacks' fan base, drawn from the sprawling Phoenix metropolitan area, is still maturing, but the franchise has proven that desert baseball is no mirage -- it is a permanent fixture of the National League landscape.