The 1925 World Series was the championship series of the 1925 Major League Baseball season. A best-of-seven playoff, it was played between the National League (NL) pennant winner Pittsburgh Pirates and the Washington Senators. The Pirates defeated the Senators four games to three to win the series. In a reversal of fortune on all counts from the previous 1924 World Series, when Washington's Walter Johnson had come back from two losses to win the seventh and deciding game, Johnson dominated in Games 1 and 4, but lost Game 7.