Sean Monahan scored the decisive shootout goal to cap a sensational comeback from Calgary as the Flames hit back from a 3-0 deficit to defeat the Western Conference-leading Dallas Stars 4-3.
Monahan added to goals from Joe Colborne and Johnny Gaudreau in the shootout – after Mikael Backlund, Gaudreau and Dougie Hamilton all netted in the third period to bring Calgary level and send the game to overtime.
Jason Spezza, Cody Eakin and Mattias Janmark were all on-target in regulation time to give the Stars a three-goal advantage before they Calgary bounced back in style.
The Detroit Red Wings blew a couple of two-goal leads but were bailed out by Brad Richards scoring the only goal in the shootout in a 5-4 victory over the Buffalo Sabres.
Leading 2-0 midway through the first period and 3-1 heading into the third, the Red Wings had to rely on Justin Abdelkader's second goal to level proceedings before Richards grabbed the win.
Filip Forsberg scored twice and Mike Ribeiro and James Neal also netted in the third period as the Nashville Predators hit back from 2-1 down to beat the Arizona Coyotes 5-2.
Wayne Simmonds scored the tie-breaking goal while Sean Couturier added gloss to the scoreline by netting having earlier contributed two assists in the Philadelphia Flyers' 4-2 win over the Ottawa Senators.
The in-form Matt Duchene and Tyson Barrie scored and Reto Berra made 27 saves as the Colorado Avalanche edged out the New Jersey Devils 2-1, while Max Pacioretty's powerplay goal with just over two minutes remaining helped the Montreal Canadiens defeat the Columbus Blue Jackets by the same scoreline.
Derek MacKenzie scored twice to help the Florida Panthers to a 3-1 triumph over the St Louis Blues in a game where all four goals were scored in the second period and Anze Kopitar's overtime goal ensured the Los Angeles Kings claimed a 2-1 success over the Vancouver Canucks.
Phil Kessel bookended the scoring in the Pittsburgh Penguins' 5-1 hammering of the San Jose Sharks and Ryan Suter's third-period effort gave the Minnesota Wild a 2-1 victory over the Chicago Blackhawks.