The 1938 World Series matched the two-time defending champion New York Yankees against the Chicago Cubs, with the Yankees sweeping the Series in four games for their seventh championship. They became the first team to win at least three championships in a row. (They would win again in 1939 to become the first team to win four straight, would win five straight from 1949 through 1953, and would assemble a third three-year streak from 1998 to 2000. The Oakland Athletics matched the three-straight accomplishment from 1972 through 1974.)