The knee injury impacted his batting average, contributing to a late-season slump. On September 16, Molina collected four hits with three runs scored to help the Cardinals to a 12–2 win over the Seattle Mariners and break an 0–15 slump, raising his batting average to .317. Eight days later, Molina was behind the plate to call rookie Michael Wacha's one-hit, 8 innings of shutout work in a 2–0 victory over the Washington Nationals. It was actually a no-hitter through that point until Ryan Zimmerman broke it up with a high-bouncing ground ball that glanced off Wacha's glove for the Nationals' only hit of the game.