Offseason
- November 18, 1997: Harvey Pulliam was traded by the Colorado Rockies to the Arizona Diamondbacks for Chuck McElroy.
- November 18, 1997: Mike Lansing was traded by the Montreal Expos to the Colorado Rockies for Jake Westbrook, John Nicholson (minors), and Mark Hamlin (minors).
- November 18, 1997: Quinton McCracken and Bryan Rekar were drafted by the Tampa Bay Devil Rays from the Colorado Rockies as the 4th and 38th picks in the 1997 expansion draft.
- December 4, 1997: Darryl Kile was signed as a Free Agent by the Colorado Rockies.
- December 10, 1997: Mark Hutton was traded by the Colorado Rockies to the Cincinnati Reds for Curtis Goodwin.
- December 10, 1997: Dave Veres was traded by the Montreal Expos with Mark Hamlin (minors) to the Colorado Rockies for Terry Jones and a player to be named later. The Colorado Rockies sent Mark Mangum (minors) (June 5, 1998) to the Montreal Expos to complete the trade.
Read more about this topic: 1998 Colorado Rockies Season