On This Date 4/12/1965


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Hailed as ‘’The Eighth Wonder of the World’’, the Astrodome hosts its first regular-season game as the Houston Astros host the Philadelphia Phillies. Dick Allen hits the first home run in the dome, driving in the game’s only runs as the Phillies spoil the dome opener 2-0. The Astros had played the New York Yankees in an exhibition three games earlier, winning 2-1 despite a home run by Mickey Mantle.