St. Louis Cardinals Matt Carpenter watches his two run home run leave the park in the seventh inning against the Houston Astros at Busch Stadium in St. Louis on July 10, 2013.  UPI/Bill Greenblatt

St. Louis Cardinals Matt Carpenter watches his two run home run leave the park in the seventh inning against the Houston Astros at Busch Stadium in St. Louis on July 10, 2013. UPI/Bill Greenblatt

Throw out all of that nonsense about lefty pitchers vs. lefty hitters when it comes to Matt Carpenter. Nine of his 14 homers have come against lefties and his two run shot Wednesday night helped the Cardinals to a 5-4 win over the Houston Astros.  Carpenter’s homer in the seventh gave the win to Seth Maness (5-1).

After Brett Wallace gave Houston a 4-3 lead with an RBI single in the top of the seventh, Tony Cruz got hit by Houston starter Jordan Lyles and one out later Carpenter took a 2-1 pitch from reliever Wesley Wright into the right-field seats.

AUDIO  Carpenter talks about his approach to facing left handed pitchers (:20)

Maness gave up two hits and a run in two innings of relief. He struck out three. Edward Mujica earned his 25th save in 26 tries. He has appeared in six consecutive games, going 1-1 with four saves.