Masi had his most productive season in 1947, earning his third selection as a reserve for the National League in the 1947 All-Star Game and ending the year ranked tenth in the league in hitting with a career-high .304 batting average. He also posted career-highs in home runs (9) and in on-base percentage (.377) and, continued to build upon his excellent defensive reputation by leading National League catchers with a .989 fielding percentage. Masi guided the Braves' pitching staff to a league-leading 14 shutouts and the second-best team earned run average in the league, as both Spahn and Sain won 21 games each. The Braves continued to improve, finishing the season in third place behind the Dodgers and Cardinals.