MAY 28, 1951
After starting his career 0-for-12, Giants rookie Willie Mays gets his first hit, a 450-foot homer off Braves left-hander Warren Spahn.
(Nationalpastime.com)

May 28, 1957,
National League owners voted unanimously to allow the New York Giants and Brooklyn Dodgers to move to San Francisco and Los Angeles, respectively, at the mid-season owner’s meeting. For the move to take place, both teams had to move together and both had to notify MLB prior to October 1, 1957. The Giants would formally announce their intention to leave for San Francisco on August 19, 1957. “Stay Team Stay” a slogan the fans came to use, fell on deaf ears. The NY Giants would soon be no more.
(Nationalpastime.com)