When the San Francisco Giants moved to the West Coast from New York, their shortstop came with them. Spencer, who began his professional career with the New York Giants in 1952, hit the first ever home run in San Francisco history. Of his 105 career home runs, none were bigger than that one.
Spencer’s famous home run came in the fourth inning off Hall of Famer Don Drysdale at Seals Stadium on April 15, 1958.
Spencer played 10 seasons in the Major Leagues, not counting two seasons in 1954 and 1955 where he left baseball for the military.