Transactions| Date | Transaction | |||
| 1/27/09 | Signed free agent catcher Carlos Maldonado, who had been with the Pirates, to a minor league contract and invited him to spring training. Signed free agent outfielder Chip Ambres, who had been with the Padres, to a minor league contract and invited him to spring training. Signed free agent shortstop Ivan Ochoa, who had been with the Giants, to a minor league contract and invited him to spring training. | |||
| 1/22/09 | Acquired LHP Fabian Williamson from the Seattle Mariners in exchange for RHP David Aardsma. Signed RHP Jonathan Papelbon to a one-year contract. Signed LHP Javier Lopez to a one-year contract. | |||
| 1/19/09 | Acquired RHP Randor Bierd from the Baltimore Orioles in exchange for RHP David Pauley. | |||
| 1/16/09 | Signed INF Kevin Youkilis to a four-year contract with a club option for a fifth year. | |||
| 1/15/09 | Re-signed OF Mark Kotsay to a one-year contract. Designated RHP David Aardsma for assignment. | |||
| 1/13/09 | Signed RHP John Smoltz to a one-year contract. Designated RHP David Pauley for assignment. | |||
| 1/10/09 | Signed RHP Takashi Saito to a one-year contract with a club option for 2010. | |||
| 1/9/09 | Signed RHP Brad Penny to a one-year contract. Sent RHP Charlie Zink outright to Triple-A Pawtucket. He had been designated for assignment on January 8. | |||
| 1/8/09 | Signed free agent OF Rocco Baldelli, who had been with the Rays, to a one-year contract. Designated RHP Charlie Zink for assignment. | |||
| Signed OF Rocco Baldelli to a one-year contract. Designated RHP Charlie Zink for assignment. | ||||
| 1/5/09 | Signed free agent INF Nick Green, who had been with the Yankees, to a Minor League contract and invited him to Spring Training. | |||
| 1/2/09 | Signed C Josh Bard to a one-year contract with a club option for 2010. | |||