The Cardinals played him in the 2013 National League Division Series (NLDS) against the Pittsburgh Pirates, where he made three total appearances, giving up two runs in two IP. Against the Dodgers in the National League Championship Series (NLCS), he appeared in four games, giving up no runs while allowing just one hit, one walk, and striking out four in IP. In the World Series against the Red Sox, he appeared in five games, pitched six innings, giving up five hits, three runs and one walk while striking out five. The Red Sox defeated the Cardinals 4–2 in that World Series. Between the three series, he appeared in 12 games, posted a 3.55 ERA, held opponents to a .167 BAA, and allowed three walks with 11 SO in IP.