Hellebuyck has stopped 73 of 77 shots in the two games against St., Louis.
Copp pounced on the rebound of a shot by Harkins to break a 2-2 tie with 10:56 left in the third period. He also had the winning tally in Saturday’s victor over St. Louis.
“You look at the standings, this is a very good team we’re trying to catch,” Copp said. “It’s just so log-jammed where we’re at that ever point matters. I think we’re playing pretty good hockey right now.”
Binnington, who fell to 24-10-5, took the blame for Coop’s goal.
“The initial thought is, ‘Control your rebound,’” Binnington said. “I’ve got to be there.”
Laine scored his 20th of the season off a cross-ice pass from Mark Scheifele at 5:58 of the second period for a 2-0 lead. Laine has scored at least 20 goals in each of his first four seasons.
Ehlers added an empty-net goal with 10 seconds left.
St. Louis scored twice in a span of a 2:20 in the second period. Gunnarsson blasted a shot from just inside the blue line past Hellebuyck to tie it.
NOTES: The Blues announced that their American Hockey League affiliate in San Antonio has been purchased by the Vegas Golden Knights. The Rampage will finish the season in San Antonio and then move to Las Vegas. The Blues will begin an immediate search for a new minor league affiliate. Chicago, which was a Blues affiliate in the AHL from 2013-2017, is an option. … St. Louis LW Alexander Steen was given a silver stick before the game to honor his 1,000th game in the NHL on Feb. 1. … “Touching, emotional,” Steen said. Jets LW Gabriel Bourque played in his 400th career game. Coach Paul Maurice coached his 500th game as Jets coach. … The Blues have come up empty in their last 20 5-on-3 power play advantages covering 23:33. They failed to score on a 48-second two-man advantage in the first period. … Winnipeg D Luca Sbisa block a shot on the knee in second period and did not return.
Jets: Will host Ottawa on Saturday in the first of a four-game homestand.
Blues: Hosts Dallas on Saturday.
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