Offseason
- December 7, 2005: Yorvit Torrealba was traded by the Seattle Mariners to the Colorado Rockies for Marcos Carvajal.
- January 9, 2006: Cody Ransom was signed as a Free Agent with the Seattle Mariners.
- March 30, 2006: Cody Ransom was purchased by the Houston Astros from the Seattle Mariners.
Read more about this topic: 2006 Seattle Mariners Season