After coming close to winning the pennant on more than one occasion during the early 1920s, the Pittsburgh Pirates finally shed the stigma of being underachievers and claimed the National League flag in 1925, ending the New York Giants' four-year reign at the top of the league. Manager Bill McKechnie's brigade of young guns moved on to oppose the defending world champion Washington Senators in the World Series. After falling behind three games to one, Pittsburgh pulled off the greatest comeback in World Series history when they rallied to win in a thrilling seventh game. This detailed history recounts the entire 1925 Pittsburgh Pirates season, paying special attention to the team's construction and the World Series. Appendices provide complete statistics for the 1925 Pittsburgh Pirates, box scores for all seven games of that year's World Series, and World Series statistics for both teams.