Diamondbacks trade deadline history
Below is every July trade — those leading up to the non-waiver trade deadline — the Diamondbacks have made in their 18-year existence, as compiled by Baseball Reference.
July 24, 1998: The Arizona Diamondbacks traded Reid Cornelius to the Florida Marlins for a player to be named later. The Marlins sent Walt White (minors) (Oct. 29, 1998) to the Diamondbacks to complete the trade.
July 8, 1999: The Marlins traded Matt Mantei to the Diamondbacks for a player to be named later, Vladimir Nunez and Brad Penny. The Diamondbacks sent Abraham Nunez (Dec. 13, 1999) to the Marlins to complete the trade.
July 25, 2010: The Diamondbacks traded Dan Haren to the Los Angeles Angels for a player to be named later, Patrick Corbin, Rafael Rodriguez and Joe Saunders. The Angels sent Tyler Skaggs (Aug. 7, 2010) to the Diamondbacks to complete the trade.