Jonathan Drouin's goal 54 seconds into overtime capped an improbable rally for the red-hot Colorado Avalanche, who increased their winning streak to nine games with Sunday's 5-4 victory over the Pittsburgh Penguins.
The Avalanche trailed 4-0 late in the second period before erupting for five unanswered goals, the last coming when Drouin skated by Pittsburgh defenseman Kris Letang up the right side before slipping a shot past goaltender Alex Nedeljkovic less than a minute into extra time.
Drouin finished with two goals and an assist, while Nathan MacKinnon had a goal and two assists to extend his streak of consecutive home games with at least one point to 34, the second-longest run in NHL history.
While the Avalanche remained tied with the Dallas Stars atop the Central Division, the Penguins were dealt another blow to their fading play-off hopes with a third consecutive defeat. Pittsburgh currently stands in 13th place in the Eastern Conference and is now nine points behind in the race for the final wild-card spot.
Sean Walker and Yakov Trenin began Colorado's comeback with goals in the final four minutes of the second period, and Drouin cut Pittsburgh's lead to 4-3 when he one-timed a cross-ice pass from MacKinnon into the Penguins' net 3:32 into the third.
MacKinnon's 44th goal of the season later tied the contest with 4:38 remaining in regulation.
The Penguins dominated the first period, outshooting Colorado by a 15-4 margin and building a 2-0 lead on goals by Jesse Puljujarvi and Bryan Rust. They extended the margin to 4-0 when Sidney Crosby and Pierre-Olivier Joseph scored less than two minutes apart in the second.
Crosby finished with three assists in addition to his 34th goal of the season.
Nedeljkovic stopped 21 of 25 shots and briefly left the game in the third period after colliding with Colorado's Casey Mittelstadt. Tristan Jarry came on in relief and turned back 4 of 5 chances while surrendering MacKinnon's tying goal.
Alexandar Georgiev finished with 30 saves for Colorado.
Oveckhin, Capitals continue surge with shutout of Jets
Alex Ovechkin extended his hot stretch with two more goals to back Charlie Lindgren's 27 saves as the Washington Capitals continued their climb in the Eastern Conference standings with a 3-0 win over the Winnipeg Jets.
John Carlson added a goal and T.J. Oshie contributed two assists to Washington's fifth victory in six games, a result that pushed the Capitals one point ahead of Detroit for the East's final wild-card spot. Washington hosts the Red Wings on Tuesday in an important late-season clash.
Both Lindgren and Winnipeg's Connor Hellebuyck were perfect through two periods, but the Capitals finally broke the scoreless stalemate when Carlson one-timed a feed from Oshie past the Jets' star netminder on a power play 1:21 into the third.
Ovechkin put Washington up 2-0 just over two minutes afterward, then beat Hellebuyck on a backhand attempt with eight minutes to go as the legendary forward increased his goal streak to five games. Oveckhin has eight goals during the run.
Lindgren had seven third-period saves to polish off his fifth shutout of the season and hand the scuffling Jets a third consecutive loss.
Hellebuyck ended with 16 saves.
Andersen sharp again as Hurricanes top Maple Leafs
Frederik Andersen made 32 saves to remain unbeaten since returning from injury as the Carolina Hurricanes held on for an important 2-1 win over the Toronto Maple Leafs.
Andersen made first-period goals from Brady Skjei and Sebastian Aho stand up to win his sixth consecutive start since coming back from a blood-clotting issue that had sidelined him for four months.
The victory was the ninth in 11 games (9-1-1) for Carolina, which trails the New York Rangers by just one point for first place in the Eastern Conference.
Toronto had a two-game winning streak snapped despite 41 saves from Joseph Woll, who also turned back Jake Guentzel on a penalty shot in the first period.
Woll was beaten early, however, as Skjei scored on the Hurricanes' first shot of the game with just 1:06 elapsed into the contest.
Aho converted a power-play chance later in the first period to extend the margin, and Andersen made 20 saves through the first two periods before Toronto's Nicholas Robertson ended the shutout bid 8:51 into the third.
The Maple Leafs had an opportunity to tie it later on after Carolina defenseman Brent Burns was called for a tripping penalty with 3:15 remaining, but the Hurricanes were able to kill off the resulting power play.