San Diego’s Fred McGriff hits a grand slam for the second game in a row, tying a major league mark. He is the 12th player – but just the third National Leaguer – to perform the feat, with Babe Ruth the only one to do so twice. His blast brings home all San Diego’s runs in a 4 – 1 win over the Astros.

This Day In Baseball

On August 14, 1991 — San Diego’s Fred McGriff hits a grand slam for the second game in a row, tying a major league mark. He is the 12th player – but just the third National Leaguer – to perform the feat, with Babe Ruth the only one to do so twice. His blast brings home all San Diego’s runs in a 4 – 1 win over the Astros.

Source:
Baseball Reference August 14
National Pastime
Retro Sheet
Hall of Fame
SABR Games Project
Replay The Game