Offseason
- October 9, 1988: Carlos Delgado was signed as an amateur free agent by the Blue Jays.
- December 6, 1988: Mauro Gozzo was drafted by the Toronto Blue Jays from the Kansas City Royals in the 1988 minor league draft.
- December 22, 1988: Cecil Fielder was purchased from the Blue Jays by the Hanshin Tigers (Japan Central).
- December 24, 1988: Mike Flanagan was signed as a free agent by the Blue Jays.
- January 18, 1989: Bob Brenly was signed as a free agent by the Blue Jays.
- March 9, 1989: DeWayne Buice was traded by the California Angels to the Toronto Blue Jays for Cliff Young.
Read more about this topic: 1989 Toronto Blue Jays Season