2003 Arizona Diamondbacks season

Offseason

• December 15, 2002: Erubiel Durazo was traded by the Diamondbacks to the Oakland Athletics as part of a 4-team trade. The Cincinnati Reds sent Elmer Dessens and cash to the Diamondbacks. The Toronto Blue Jays sent Felipe López to the Reds. The Athletics sent a player to be named later to the Blue Jays. The Athletics completed the deal by sending Jason Arnold to the Blue Jays on December 16.
• January 30, 2003: Ricky Bottalico was signed as a free agent by the Diamondbacks.
• February 14, 2003: Scott Service was signed as a free agent by the Diamondbacks.

  Regular season

• September 19, 2003: Diamondbacks pitcher Randy Johnson hit a home run off of Milwaukee Brewers pitcher Doug Davis.

  Season standings

National League West

Record vs. opponents

Notable transactions

• June 3, 2003: 2003 Major League Baseball draft
• *Conor Jackson was drafted by the Diamondbacks in the 1st round. Player signed June 16, 2003.
• *Carlos Quentin was drafted by the Diamondbacks in the 1st round. Player signed July 2, 2003.
• June 16, 2003: Scott Service was selected off waivers from the Diamondbacks by the Toronto Blue Jays.
• June 29, 2003: Matt Williams was released by the Diamondbacks.
• July 29, 2003: David Dellucci, Bret Prinz, and John Prowl were traded by the Diamondbacks to the New York Yankees for Raúl Mondesí and cash.

  Roster

Player stats

Batting

Starters by position

Other batters

Pitching

Starting pitchers

Other pitchers

Relief pitchers

Farm system