In Boston, a questionable hit by Dennis Seidenberg on Jonathan Toews overshadowed the return of Zdeno Chara after a 19-game absence.
Here are four stories from Thursday night.
Senators fall short in Dave Cameron's debut
The Senators fell 5-3 to the defending Stanley Cup champion Los Angeles Kings at Canadian Tire Centre, meaning they were not able to win for Cameron, who was promoted from his position as an assistant when Ottawa announced the firing of Paul MacLean on Monday.
The Kings jumped out to a 2-1 lead and after a quiet second period for both teams, there were a flurry of goals in the final 20 minutes.
A short-handed marker by Mark Stone pulled the Senators even, but the Kings responded with a pair of goals — with Trevor Lewis' holding up as the game winner —to build up a 4-2 lead. Jared Cowen of the Senators made things interesting when his wrist shot closed the gap to 4-3. Ottawa wouldn't get any closer, though, as Tanner Pearson put the game out of reach with an empty netter.
The Senators have now lost five of their last six games.
Flames lose 3rd straight, Sabres rolling
After defeating the Flames 4-3, the Sabres are now winners in eight out of their last 10 games. Meanwhile, the Flames now find themselves in the midst of a three-game losing streak.
This contest amounted to a see-saw battle as the Flames and Sabres exchanged goals, with Buffalo's Zemgus Girgensons knotting the score at 3-3 eight minutes into the third period.
Matt Moulson struck twice for the Sabres and provided the decisive goal with just over seven minutes remaining.
Despite their inspired play of late, the Sabres remain firmly at the bottom of the Atlantic Division standings. And the Flames, who had a chance to pull even with the idle Vancouver Canucks, still occupy the third spot in the Pacific Division.
Avalanche get revenge on Jets
The Jets appeared to be in the drivers seat with a 3-1 lead heading into the final eight minutes of regulation. However, the game took a sharp turn when Jarome Iginla and Ryan O'Reilly each scored to help the Avalanche force an extra period en route to a 4-3 shootout win.
Neither team could put the game to rest in the five minutes of 4-on-4, but thanks to shootout goals by Nathan MacKinnon and Matt Duchene, the Avalanche were able to wrestle away the extra point.
In their previous meeting on Dec. 5 at MTS Centre, the Jets handed the Avalanche a 6-2 loss. So, the Avalanche were able to provide a little bit of payback and halt a four-game losing streak in the process.
Although the result is no doubt disappointing for the Jets, they have still managed to register a point in each of their last six road games (3-0-3).
Seidenberg delivers questionable hit on Toews
What started out as a celebration of Zdeno Chara's return to action after missing 19 games, turned into a somewhat ugly affair between the Boston Bruins and Chicago Blackhawks.
Midway through the second period of an eventual 3-2 win for Chicago, Bruins defenceman Dennis Seidenberg was assessed nothing more than a two-minute boarding penalty for this hit-from-behind on Chicago star Jonathan Toews.
The Blackhawks forward, who has been hindered by concussion symptoms at times in his career, was called for hooking 49 seconds later, but did not return to the game after that point for what the team deemed as precautionary reasons.
However, Blackhawks coach Joel Quenneville said after the game that he expects Toews to be fine moving forward.
The hit was met with outrage by many fans and may warrant further review by the league to determine if Seidenbergs' actions are worthy of a suspension.
But the roughhousing didn't stop there.
Following a goal by Torey Krug that cut the lead to 3-2, this hit by Chicago's Andrew Shaw got tempers flaring.
Shaw and Chris Kelly then picked up fighting majors for exchanging some serious punches.