Offseason
- December 4, 1989: Drafted Shane Mack from the San Diego Padres in the 1989 Rule 5 draft.
- December 6, 1989: Signed Kent Hrbek as a free agent.
- January 8, 1990: Carmelo Castillo was signed as a Free Agent with the Minnesota Twins.
Read more about this topic: 1990 Minnesota Twins Season