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This Day in Braves History: June 21
1959 - Hank Aaron launches three two-run home runs to help power the Braves to a 13-3 win over the Giants. It is the only 3-homer game of Aaron’s career.
1967 - Braves catcher Bob Uecker hits the only grand slam of his career to help the Braves to a 9-2 win over the San Francisco Giants at Candlestick Park. Uecker hit .146/.236/.215 with three home runs in 62 games for Atlanta in his final season in the majors.
1974 - The Braves fire manager Eddie Mathews and replace him with Clyde King. Mathews finishes with a career record of 149-161 in three seasons. The Braves would finish the season 38-25 under King but would go 58-76 during the 1975 season.