>>Blues Down Rangers, Remain Unbeaten
Carl Gunnarsson and Brayden Schenn scored first-period goals for St. Louis, which improved to 4-0. Jaden Schwartz added an empty-netter with 1:47 left.
Trailing 2-1, the Rangers pressured an injury-depleted Blues squad in the third period, outshooting St. Louis 16-8.
New York outshot the Blues 32-23 overall.
Gunnarsson opened the scoring at 15 seconds with his second of the season, a wide-open wrist shot from the slot.
Mika Zibanejad tied the game 2:07 later with his fifth of the season on the power play.
The Blues visit the Florida Panthers on Thursday.
>>Blackhawks Top Canadiens
Alex Debrincat got his first as a Blackhawk and set up one for Artem Anisimov as Chicago spoiled the Montreal Canadiens' home opener with a 3-1 victory on Tuesday night.
And tallying his first against a Vezina Trophy winner like Carey Price made it that much better.
Brandon Saad also scored for Chicago (3-0-1), which was coming off an overtime loss Monday night in Toronto.
Tomas Plekanec scored for Montreal (1-3-0) when he picked off a Ryan Hartman pass in the Blackhawks zone, wheeled and scored on a wrist shot inside the near post 1:15 into the game.
Patrick Sharp intercepted a Jordie Benn clearing attempt and fed DeBrincat for a one-timer goal at 17:53. Only 19 seconds later, Saad got this fifth goal of the season on a tap-in while finishing a three-man rush with Jonathan Toews and Richard Panik.
DeBrincat made the decisive pass in a tic-tac-toe play with Cody Franson that Anisimov finished with a tap-in on a power play 10:44 into the second frame.
The Blackhawks host Minnesota on Thursday.