Complete the following sentence: The A's made it to the World Series the next two years, winning the 1989 "Loma Prieta earthquake" series 4-0 vs. the San Francisco Giants and being swept by the Cincinnati Reds 4<unk>0 in 1990. A's haven't appeared in the World Series since. (A's haven't appeared in the World Series since) ąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąą
American League Championship Series<unk> in six games and 2006, when they lost to the Detroit Tigers in the ALCS in a four-game sweep.