With the Yankees, his strict but fair managing style helped to solidify the team's place as the dominant franchise in baseball. During his tenure, the Yankees won seven World Series. His most successful period came from 1936 to 1943. During that time, they won seven out of a possible eight pennants, all by nine games or more, and won six World Series—including four in a row from 1936 to 1939. They were the first American League team, and the third in major league history, to win four straight pennants, and the first to win more than two World Series in a row. The only time during this stretch that the Yankees' dominance was even threatened was in 1940, when they struggled all season and finished third. During his time with the Yankees, the team won 100 games or more six times. The worst finish he ever had with the team was fourth, achieved during his last full season in 1945, although the team finished 81-71.