| Date | Transaction | |||
| 12/28/05 | Agreed to terms on a three-year, $29-million contract with RHP Jon Garland, avoiding arbitration. | |||
| 12/20/05 | Non-tendered RHP Jon Adkins, RHP Felix Diaz, INF Willie Harris and OF Timo Perez, allowing them to become free agents. | |||
| Acquired RHP Javier Vazquez and cash considerations from the Arizona Diamondbacks in exchange for RHP Orlando Hernandez, RHP Luis Vizcaino and OF Chris Young. | ||||
| 12/19/05 | Agreed to terms on a three-year, $15-million contract with C A.J. Pierzynski. | |||
| 12/13/05 | Acquired INF Rob Mackowiak from the Pittsburgh Pirates in exchange for LHP Damaso Marte. | |||
| 12/8/05 | Selected INF Tim Hummel, C Cole Armstrong and RHP Dewon Day in the Rule 5 Draft. | |||
| 12/7/05 | Declined to offer salary arbitration to free agents C Raul Casanova, DH Carl Everett and DH Frank Thomas, allowing them to become free agents. | |||
