On April 14, 1998 — Diamondback third baseman Matt Williams knots the score at 4-4 when he hits the first-ever grand slam in franchise History. The fourth-inning blast off southpaw Kent Mercker proves to be of little consequence in the expansion team’s 15-5 loss to the Cardinals at Busch Stadium. (Our thanks to M. Blake for suggesting this entry.)

Source:
National Pastime

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