Atlanta hits two grand slams in a game for the first time since May 2, 1987, using homers by Tim Spehr and Ryan Klesko to rally from a 6 – 0 deficit for its eighth straight victory over the Philadelphia Phillies this season. The Braves win, 10 – 6.

On July 14, 1997 Atlanta hits two grand slams in a game for the first time since May 2, 1987, using homers by Tim Spehr and Ryan Klesko to rally from a 6 – 0 deficit for its eighth straight victory over the Philadelphia Phillies this season. The Braves win, 10 – 6.

Source
Baseball Reference July 14