|1/30/09||Re-signed free agent RHP Randy Messenger to a Minor League contract and invited him to Spring Training.|
|1/29/09||Signed free agent first baseman Mike Sweeney, who had been with the Athletics, to a Minor League contract and invited him to Spring Training.|
|1/28/09||Acquired infielder Ronny Cedeno and LHP Garrett Olson from the Cubs for RHP Aaron Heilman. Released RHP Randy Messenger.|
|1/20/09||Acquired RHP David Aardsma from the Red Sox for nonroster LHP Fabian Williamson. Aardsma had been designated for assignment on January 15.|
|1/14/09||Invited C Adam Moore to Spring Training. Invited RHP Chris Jakubauskas to Spring Training. Invited RHP Luis Munoz to Spring Training. Invited RHP Sean White to Spring Training. Invited RHP Shawn Kelley to Spring Training. Invited RHP Tracy Thorpe to Spring Training.|
|1/6/09||Signed RHP Tyler Walker, who had been with the Giants, to a one-year contract.|
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