Ryan Reaves also scored for St. Louis and Jaroslav Halak stopped 19 shots as the Blues won for the 11th time in 15 games to start the season. It's the first time they've done that since 2003-04, also the best start in franchise history.
It was St. Louis' first regulation victory against the Penguins since a 4-1 win Dec. 19, 2006, in Pittsburgh.
Jussi Jokinen scored and Marc-Andre Fleury made 30 saves for the Penguins, who have dropped two straight after a four-game winning streak. The 20 shots were a season low for Pittsburgh.