At Yankee Stadium‚ Mickey Mantle’s walk in the 7th is the first baserunner against Willard Nixon‚ and Mantle’s two-out 9th inning homer deprives the Boston righty of a shutout. Boston beats the Yankees, 7 – 3.

On May 29, 1956 — At Yankee Stadium‚ Mickey Mantle’s walk in the 7th is the first baserunner against Willard Nixon‚ and Mantle’s two-out 9th inning homer deprives the Boston righty of a shutout. Boston beats the Yankees, 7 – 3.

Source:
Baseball Reference May 29