Stack Hack 's 12th - inning RBI double keeps Cubs alive in Game 6 .
Billy goat curse , put on in Game 4 , takes effect in Tigers ' 9 - 3 rout in Game 7 .
Stack Hack 's 12th - inning RBI double keeps Cubs alive in Game 6 but billy goat curse , put on in Game 4 , takes effect in Tigers ' 9 - 3 rout in Game 7 .