Established in 1998 -The Arizona Diamondbacks, also fondly referred to as the D-backs, are an MLB team based in Phoenix, Arizona. The Diamondbacks compete in the National League (NL) West division. They won the World Series once in 2001.
- The Diamondbacks retired the jersey number 20 in honor of Luis Gonzalez.
- The Diamondbacks retired the jersey number 51 in honor of Randy Johnson.
- The All MLB retired the jersey number 42 in honor of Jackie Robinson.