On June 26, 1972, a first inning 3-run bomb by Joe Torre helped lead the Cardinals to a 4-3 victory over the Montreal Expos at Busch. Lou Brock picked up what proved to be the game winning rbi in the bottom of the second as he knocked Dal Maxvill across the plate with a double. Early in the game it looked like it might be a long day for the Cardinals starter Bob Gibson, he was victimized by errors in the first, and got knocked around a little bit in the third, before he settled in and shut the Expos lineup down on his way to picking up a complete game victory.
Check out the box score: http://www.baseball-reference.com/boxes/SLN/SLN197206260.shtml
You can also watch a virtual game here: http://www.backtobaseball.com/playballregularseason.php?page=0&IDindex=SLN197206260