Transactions| Date | Transaction | |||
| 1/30/09 | Signed free agent catcher Paul Bako, who had been with the Reds, to a one-year contract. | |||
| 1/28/09 | Acquired RHP Aaron Heilman from the Seattle Mariners for LHP Garrett Olson and INF Ronny Cedeno. | |||
| 1/20/09 | Invited C Steve Clevenger to Spring Training. Invited C Welington Castillo to Spring Training. Invited LHP Edward Campusano to Spring Training. Invited LHP J.R. Mathes to Spring Training. Invited OF Doug Deeds to Spring Training. Invited RHP Andrew Cashner to Spring Training. Invited RHP Esmailin Caridad to Spring Training. Invited RHP Rocky Roquet to Spring Training. Invited SS Darwin Barney to Spring Training. Re-signed INF Bobby Scales to a Minor League contract and invited him to Spring Training. Re-signed OF Jason Dubois to a Minor League contract and invited him to Spring Training. Signed INF Luis Rivas, who had been with the Pirates, to a Minor League contract and invited him to Spring Training. Signed LHP Mike Stanton to a Minor League contract and invited him to Spring Training. Signed RHP Ken Kadokura to a Minor League contract and invited him to Spring Training. | |||
| 1/18/09 | Acquired LHP Garrett Olson and RHP Henry Williamson from the Baltimore Orioles for OF Felix Pie. | |||
| 1/14/09 | Signed LHP Matt Smith, who had been with the Phillies, to a Minor League contract and invited him to Spring Training. Signed OF So Taguchi, who had been with the Phillies, to a Minor League contract and invited him to Spring Training. | |||
| 1/8/09 | Signed OF Milton Bradley, who had been with the Rangers, to a three-year contract. | |||
| 1/6/09 | Traded RHP Jason Marquis to the Rockies for RHP Luis Vizcaino. | |||
| 1/5/09 | Signed LHP Bill White, who had been with the Rangers, to a Minor League contract and invited him to Spring Training. | |||
