Offseason
- December 5, 1984: Rickey Henderson, Bert Bradley and cash were traded by the Athletics to the New York Yankees for Stan Javier, Jay Howell, José Rijo, Eric Plunk, and Tim Birtsas.
- December 7, 1984: Ray Burris, Eric Barry (minors) and a player to be named later were traded by the Athletics to the Milwaukee Brewers for Don Sutton. The Athletics completed the deal by sending Ed Myers (minors) to the Brewers on March 25, 1985.
- December 8, 1984: Bill Caudill was traded by the Athletics to the Toronto Blue Jays for Alfredo Griffin, Dave Collins, and cash.
- February 5, 1985: Rob Picciolo was signed as a Free Agent with the Oakland Athletics.
Read more about this topic: 1985 Oakland Athletics Season