The win was Carpenter's third this year against the Pirates out of five he has overall. In those three games, the Cy Young Award winner has given up only two runs and 13 hits in 21 innings.
Two other notables Tuesday were Scott Rolen, who took over the National League lead in batting at .351 with two doubles and two singles, and Jason Isringhausen, who survived a run in the ninth to post his 21st save of the season. It was his 161st save as a Cardinal, breaking a tie with Lee Smith for the club record.
REPLAY: Scott Rolen figured in the Cardinals' scoring in both the fourth and fifth innings Tuesday in a 2-1 win over Pittsburgh. He hustled his way to a double on a blooper in the fourth and came home on Juan Encarnacion's single up the middle.
--RHP Jason Isringhausen has had three saves in the last four games, and he broke the Cardinals' club mark with his 161st Tuesday night. "It's nice to get milestones, especially with me being from the area," Isringhausen said. "But with the struggles (control problems) I've been through this year, there's still a long way to go."
--RHP Braden Looper and LHP Randy Flores provided perfect bridge work between RHP Chris Carpenter, the winner, and RHP Jason Isringhausen, the saver. Looper retired two hitters in the eighth and Flores one.
--RHP Chris Carpenter became only the 18th Cardinals pitcher to strike out 13 or more hitters. His previous career high had been 12, achieved three times.
--3B Scott Rolen is 14-for-27 in the eight games since 1B Albert Pujols came out of the lineup with a strained oblique muscle. He also has knocked in 20 runs in his last 15 games.
--The Cardinals are 6-1 against the Pirates this season and 11-17 against the rest of the NL Central.