<P> In baseball , the `` Shot Heard ' Round the World '' was a game - winning home run by New York Giants outfielder and third baseman Bobby Thomson off Brooklyn Dodgers pitcher Ralph Branca at the Polo Grounds in New York City on October 3 , 1951 , to win the National League ( NL ) pennant . Thomson 's dramatic three - run homer came in the ninth inning of the decisive third game of a three - game playoff for the pennant in which the Giants trailed , 4 -- 2 . </P>
where did the shot heard around the world happen
at the Polo Grounds in New York City