At the Polo Grounds, the Giants drop an 8 – 3 decision to the Cubs. New York rookie Les Layton, in his first major league at-bat, hits a pinch homer in the 9th off Johnny Schmitz.
On May 21, 1948 — At the Polo Grounds, the Giants drop an 8 – 3 decision to the Cubs. New York rookie Les Layton, in his first major league at-bat, hits a pinch homer in the 9th off Johnny Schmitz.
Source:
Baseball Reference May 21