Transactions| Date | Transaction | |||
| 12/23/03 | Signed free agent INF Todd Walker to a one-year contract. | |||
| 12/21/03 | Damian Miller: Traded C Damian Miller and cash to Oakland in exchange for a player to be named later. | |||
| Nontendered 1B Randall Simon making him a free agent. | ||||
| 12/20/03 | Nontendered RHP Scott Chiasson and C Michael Barrett making them free agents. | |||
| 12/19/03 | Jose Macias: Acquired OF/INF Jose Macias from the Expos for nonroster RHP Wilton Chavez. | |||
| 12/18/03 | Todd Hollandsworth: Signed free agent OF Todd Hollandsworth to a one-year contract. | |||
| Kent Mercker: Signed free agent LHP Kent Mercker to a one-year contract. | ||||
| 12/7/03 | Re-signed 2B Mark Grudzielanek to a one-year contract with a club option for 2005; re-signed OF Tom Goodwin to a one-year contract. | |||
| 12/3/03 | Signed free agent RHP LaTroy Hawkins to a two-year contract with a third year player option. | |||