Roseboro helped guide the Dodgers' pitching staff to a league leading 2.85 earned run average in 1963 as the Dodgers clinched the National League Pennant by 6 games over the St. Louis Cardinals. Roseboro made his presence felt in the 1963 World Series against the New York Yankees when he hit a three-run home run off Whitey Ford to win the first game of the series. The Dodgers went on to win the series by defeating the Yankees in four straight games. The Dodgers dropped to seventh place in the 1964 season, however Roseboro hit for a career high .287 batting average and led the league's catchers with a 60.4% caught stealing percentage, the ninth highest season percentage in major league history.