July 31, 1998 Arizona DiamondbacksARI ↔ Cleveland SpidersCLE ARI sent 1 asset Player Justin Baughman CLE sent 1 asset Player Cecil Espy
July 29, 1998 Arizona DiamondbacksARI ↔ Baltimore OriolesBAL ARI sent 2 assets Player Eric Owens Pick 1999 4th Rd BAL sent 1 asset Player Ramon J. Martinez
July 29, 1998 Arizona DiamondbacksARI ↔ Toronto Blue JaysTOR ARI sent 2 assets Player Robin Ventura Salary retained: $79,300 Player Scott Karl TOR sent 2 assets Player Lance Blankenship Player David Green Total salary retained$79,300
July 29, 1998 Arizona DiamondbacksARI ↔ St. Louis CardinalsSTL ARI sent 2 assets Player Mike Harkey Salary retained: $70,000 Pick 1998 2nd Rd STL sent 1 asset Player Andy Benes Total salary retained$70,000
July 13, 1998 Boston Red SoxBOS ↔ Arizona DiamondbacksARI BOS sent 1 asset Player Dante Bichette ARI sent 1 asset Pick 1999 5th Rd
July 4, 1998 Florida MarlinsFLA ↔ Arizona DiamondbacksARI FLA sent 1 asset Player David Bell ARI sent 1 asset Pick 1998 3rd Rd
July 4, 1998 Cleveland SpidersCLE ↔ Arizona DiamondbacksARI CLE sent 1 asset Player Mike Fyhrie ARI sent 1 asset Player Butch Huskey
April 14, 1998 Milwaukee CreamsMIL ↔ Arizona DiamondbacksARI MIL sent 3 assets Player Steve Finley Player Tim Kubinski Player Jimmy Hurst ARI sent 3 assets Player Tilson Brito Player Turk Wendell Player Shinya Sasaki