Offseason
- October 29, 1997: Dane Johnson was selected off waivers from the Athletics by the Toronto Blue Jays.
- November 7, 1997: The Athletics traded a player to be named later to the New York Yankees for Kenny Rogers and cash. The Athletics completed the deal by sending Scott Brosius to the Yankees on November 18.
- November 18, 1997: Tony Batista was drafted from the Athletics by the Arizona Diamondbacks as the 27th pick in the 1997 MLB Expansion Draft.
- November 26, 1997: David Newhan and Don Wengert were traded by the Athletics to the San Diego Padres for Jorge Velandia and Doug Bochtler.
- November 22, 1997: Damon Berryhill was signed as a free agent by the Athletics.
- December 4, 1997: Mark Acre was purchased from the Athletics by the Yakult Swallows.
- December 5, 1997: Jack Voigt was signed as a free agent by the Athletics.
- December 16, 1997: Mike Blowers was signed as a free agent by the Athletics.
- December 22, 1997: Izzy Molina was signed as a free agent by the Athletics.
- January 22, 1998: Rickey Henderson was signed as a free agent by the Athletics.
- March 9, 1998: Kevin Mitchell was signed as a free agent by the Athletics.
- March 17, 1998: Ernie Young was purchased from the Athletics by the Kansas City Royals.
- March 25, 1998: Doug Bochtler was purchased from the Athletics by the Detroit Tigers.
Read more about this topic: 1998 Oakland Athletics Season