On August 21, 1973 — Rick Wise hits the second grand slam of his career, off Roric Harrison, as the Cards score seven runs in the 3rd inning. But the Braves score six runs in the 6th to win, 11 – 7.


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Sources:
Baseball Reference August 21
National Pastime August 20
Retro Sheet
Hall of Fame
SABR Games Project
Replay The Game