Marian Hossa had two goals, Scott Darling made 22 saves and the Chicago Blackhawks beat the Arizona Coyotes 4-0 on Tuesday night to snap a two-game slide.
Artem Anisimov and Dennis Rasmussen also scored to help Chicago maintain a three-point lead over St. Louis in the Central Division.
Darling made a handful of tough stops but wasn't heavily tested in his first shutout this season and third of his career. He started his third straight game in place of No. 1 goalie Corey Crawford, who had an appendectomy in Philadelphia on Saturday.
The 37-year-old Hossa scored his team-leading 13th and 14th goals in his 27th game - surpassing his total of 13 last season in 64 contests.
>>Blues Get By Canadiens in Overtime
Jaden Schwartz completed a late rally with a pair of goals, including one in overtime, to lead the Blues to a 3-2 victory over the Montreal Canadiens on Tuesday night.
Paul Stastny also scored for St. Louis, which has won four of five. The Blues charged back from a 2-0 third-period deficit and have a point in their last 13 home games.
Tomas Plekanec and Paul Byron scored for Montreal, which completed a five-game trip 2-3.
Goalie Jake Allen made 28 saves to improve to 13-3-3.
St. Louis struggled through most of the contest, unable to solve backup goaltender Al Montoya until the third period.
Stastny started the rally with a goal at 7:40 of the third period.
Schwartz tied it 2:51 later to set the stage for his third game-winning goal of the season. He took a pass from Alexander Steen and calmly lifted a backhander past Montoya with 1:22 left in overtime.
The Canadiens were without leading scorer Alex Galchenyuk, who injured his knee in Sunday's 5-4 win at Los Angeles.
The Blues begin a four-game trip at the New York Islanders on Thursday night.