The 1989 World Series was the championship series of Major League Baseball's (MLB) 1989 season. The 86th edition of the World Series, it was a best-of-seven playoff played between the American League (AL) champion Oakland Athletics and the National League (NL) champion San Francisco Giants. The Series ran from October 14 through October 28, with the Athletics sweeping the Giants in four games. It was the first World Series sweep since 1976, when the Cincinnati Reds swept the New York Yankees.