On April 16, 1984 — In his first three at-bats, A’s Dave Kingman hits three home runs, including a grand slam, driving in eight runs against the Mariners in a 9-6 victory. ‘Sky King’ will compile five three-round-tripper games during his 16-year career, second only to Johnny Mize, who accomplished the feat six times from 1938 to 1950 while with the Cardinals and Yankees.

Source:
National Pastime

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