| Date | Transaction | |||
| 1/28/04 | Announced the retirement of INF Dean Palmer. | |||
| 1/20/04 | Signed RHP Esteban Yan to a minor league contract and invited him to Spring Training. | |||
| Invited nonroster RHP Jorge Cordova, C Mike Rabelo, C Max St. Pierre, INF Rayner Bautista and OF Jeff Inglin to Spring Training. | ||||
| 1/14/04 | Re-signed OF Ben Petrick to a minor league contract and invited him to Spring Training. | |||
| Signed RHP Jason Karnuth to a minor league contract. | ||||
| Signed INF Greg Norton, INF Pablo Ozuna, C Bobby Estalella and RHP Craig Dingman to minor league contracts and invited them to Spring Training. | ||||
| 1/8/04 | Sent RHP John Ennis outright to Triple-A Toledo. | |||
| Acquired shortstop Carlos Guillen from Seattle in exchange for shortstop Ramon Santiago and minor league shortstop Juan Gonzalez. | ||||
| 1/5/04 | Outrighted left-handed pitcher Adrian Burnside to Triple-A Toledo. | |||
| 1/4/04 | Agreed to terms on a one-year contact with INF Ramon Martinez. | |||
