Offseason
- December 20, 2007 Signed free agent RHP Carlos Silva
- January 8, 2008 Signed free agent INF Miguel Cairo
- January 31, 2008 Signed free agent OF Brad Wilkerson
- February 8, 2008 Traded OF Adam Jones, LHP George Sherrill, and minor league pitchers Tony Butler, Chris Tillman and Kam Mickolio to the Baltimore Orioles for LHP Érik Bédard
- Dismissed all coaches hired under Mike Hargrove except hitting coach Jeff Pentland and hired former MLB managers Jim Riggleman (bench coach), Sam Perlozzo (third base coach), and Lee Elia (special assistant to the manager), as well as Mel Stottlemyre (pitching coach), Norm Charlton (bullpen coach), and Eddie Rodriguez (first base coach).
Read more about this topic: 2008 Seattle Mariners Season