Arizona Diamondbacks
baseball team and Major League Baseball franchise in Phoenix, Arizona, United States
The Arizona Diamondbacks (often referred to as the D-backs) are an American professional baseball team based in Phoenix, Arizona. The Diamondbacks compete in Major League Baseball (MLB) as a member club of the National League (NL) West Division. The franchise was established on March 9, 1995 and began play in 1998 as an expansion team. The team plays its home games at Chase Field. Along with the Tampa Bay Rays, the Diamondbacks are one of the newest teams in MLB and are the youngest team to win a World Series, doing so in only their fourth season of existence in 2001.
After a fifth-place finish in their inaugural season, the Diamondbacks made several off-season acquisitions, including future Hall of Fame pitcher Randy Johnson, who won four consecutive Cy Young Awards in his first four seasons with the team. In 1999, Arizona won 100 games and their first division championship. In 2001, they won the World Series over the three-time defending champion New York Yankees, becoming the fastest expansion team in MLB history to win the World Series and the first and only men's major professional sports team in Arizona to win a championship. 22 years later they won their second NLCS and returned to the World Series, losing to the Texas Rangers.
From 1998 to 2025, the Diamondbacks had an overall record of 2,167–2,267 (.489).
The public source identifies “Arizona Diamondbacks” as baseball team and Major League Baseball franchise in Phoenix, Arizona, United States. This brief keeps that definition visible, then builds a research path around Arizona, Diamondbacks and baseball.
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The citation trail is more important than the brevity of the summary: it shows where individual claims can be examined in context. The source revision retrieved here is dated Sep 17, 2026. The linked authority identifier is Q670376. VIAF identifies the subject as 157286962. The Library of Congress control number is n98095913. None of the 4 selected statements returned an explicit reference. The first chronological checks are 1995, 1998, 2001 and 1999.
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This entry incorporates text from “Arizona Diamondbacks” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.