Offseason
- December 31, 2004: Todd Hollandsworth was signed as a Free Agent with the Chicago Cubs.
- January 20, 2005: Cody Ransom was signed as a Free Agent with the Chicago Cubs.
- February 2, 2005: Sammy Sosa was traded by the Chicago Cubs with cash to the Baltimore Orioles for Jerry Hairston, Mike Fontenot, and Dave Crouthers (minors).
- February 8, 2005: Scott McClain was signed as a Free Agent with the Chicago Cubs.
- March 30, 2005: Cody Ransom was purchased by the Texas Rangers from the Chicago Cubs.
Read more about this topic: 2005 Chicago Cubs Season