Offseason
- November 5, 1998: Melvin Nieves was released by the Cincinnati Reds.
- November 10, 1998: Bret Boone was traded by the Cincinnati Reds with Mike Remlinger to the Atlanta Braves for Rob Bell, Denny Neagle, and Michael Tucker.
- November 11, 1998: Paul Konerko was traded by the Cincinnati Reds to the Chicago White Sox for Mike Cameron.
- December 21, 1998: Steve Avery was signed as a Free Agent with the Cincinnati Reds.
- February 2, 1999: Mark Sweeney was traded by the San Diego Padres with Greg Vaughn to the Cincinnati Reds for Damian Jackson, Reggie Sanders, and Josh Harris (minors).
Read more about this topic: 1999 Cincinnati Reds Season