| Date | Transaction | |||
| 12/29/03 | The Devil Rays agreed to terms with free agent catcher Brook Fordyce on a one-year contract, pending the completion of a physical examination. | |||
| 12/20/03 | Devil Rays nontendered INF Marlon Anderson, INF Jared Sandberg and RHP Gerardo Garcia, making them free agents. | |||
| 12/15/03 | Selected RHP Alec Zumwalt from Braves in Major League phase of Rule 5 Draft. Selected RHP Mark Comoli from Toronto and RHP Tim Corcoran from Baltimore in Triple-A phase. Selected C Adam Munoz from Atlanta, OF Sergio Contreras from Anaheim and 1B/OF Matt Bowser from Oakland in Double-A phase. | |||
| 12/14/03 | Signed free-agent OF Jose Cruz and SS Rey Sanchez. | |||
| Acquired 3B Geoff Blum from Houston in exchange for RHP Brandon Backe; traded LHP Joe Kennedy to Colorado and obtained LHP Mark Hendrickson in a three-way deal. | ||||
| 12/10/03 | Signed OF/INF Eduardo Perez to a two-year deal. | |||
| 12/8/03 | OF Jason Tyner was claimed off waivers by the Texas Rangers; LHP Mark Malaska was claimed off waivers by the Boston Red Sox; OF Matt Diaz was outrighted to Triple-A Durham. | |||
| 12/5/03 | Signed OF Alex Hernandez and C Robinson Cancel to a minor league contract. | |||