Who hit two grand slams in one inning?

Who hit two grand slams in one inning? Saturday marks the 23rd anniversary of the night Cardinals third baseman Fernando Tatis pummeled two grand slams in the same inning at Dodger Stadium, and even more astonishingly, did so off the same pitcher (Chan Ho Park).

Saturday marks the 23rd anniversary of the night Cardinals third baseman Fernando Tatis pummeled two grand slams in the same inning at Dodger Stadium, and even more astonishingly, did so off the same pitcher (Chan Ho Park).