All the runs in the game for both teams were scored in the 8th inning as the Giants outscored the Cardinals at Candlestick Park 6-4.
The Cardinals Joe Hague slammed a grand slam homer in the 8th off winning pitcher Gaylord Perry (2-0) to lift the Cardinals to a 4-0 lead before a six run Giant bottom of the 8th.
The first six runners in the Giants 8th reached base and all would score as the Giants batted around.
Don McMahon pitched a scoreless 9th for his first save of the season as the Giants moved to 11-4 on the season.
Ken Henderson finished with 2 hits,2 RBI and a steal for the Giants in the win.