The Diamondbacks defeat the A’s, 7 – 4, as Jay Bell hits a grand slam which wins Gylene Hoyle $1 million. She is the fan who wins the prize for picking the player who would hit a grand slam and the inning in which it would be done.

On July 11, 1999The Diamondbacks defeat the A’s, 7 – 4, as Jay Bell hits a grand slam which wins Gylene Hoyle $1 million. She is the fan who wins the prize for picking the player who would hit a grand slam and the inning in which it would be done.

Source
Baseball Reference July 11