In the 1937 season, Danning and Mancuso shared the catching duties with Danning appearing in 93 games, while Mancuso appeared in 86 games. In 1938 Danning took over the role as the Giants starting catcher. He was selected for the National League All-Star squad in four consecutive years (1938–1941), was on the world champion Giants team that defeated the Washington Senators in the 1933 World Series, and appeared in the pennant-winning clubs that were defeated by the New York Yankees in the 1936 and 1937 World Series.