Offseason
- November 19, 1998: Eric Davis was signed as a Free Agent with the St. Louis Cardinals.
- November 19, 1998: Ricky Bottalico was traded by the Philadelphia Phillies with Garrett Stephenson to the St. Louis Cardinals for Jeff Brantley, Ron Gant, and Cliff Politte.
- December 7, 1998: Willie McGee was signed as a Free Agent with the St. Louis Cardinals.
- December 14, 1998: Edgar Rentería was traded by the Florida Marlins to the St. Louis Cardinals for Armando Almanza, Braden Looper, and Pablo Ozuna.
- January 15, 1999: Mike Mohler was signed as a Free Agent with the St. Louis Cardinals.
Read more about this topic: 1999 St. Louis Cardinals Season