Colorado Avalanche forward Andreas Martinsen was the overtime hero for Norway.
Martinsen scored the winning goal on the power play at 2:23 of the extra period to lead the Norwegians to a 4-3 victory over Switzerland on Sunday at the Ice Palace in Moscow, Russia.
Just 1:24 after the Swiss' Yannick Weber took a high-sticking penalty in OT, Martinsen ended the contest with one-time wrist shot from the left circle.
"We won the faceoff, and I saw Mathis [Olimb] skating with the puck," Martinson told the official IIHF website. "I tried to jump into the opening, and he got it to me. I just took a quick shot. Luckily, it went in. I like a quick release, but I usually aim over the glove."
Goaltender Reto Berra did not play in the contest for Switzerland after he was in net for Saturday's shootout loss to Kazakhstan.
Martinsen finished with two shots and a minus-1 rating in 17:20 of ice time while on the squad's top line with Anders Bastiansen and fellow NHLer Mats Zucarello.
Norway nearly pulled out the victory in regulation, but Swiss defenseman Felicien DuBois scored with 10 seconds left in the third period to tie the contest 3-3.
For the second straight game, Switzerland outshot its opponent (39-26) but again came up short after regulation.
Both teams have Monday off. On Tuesday, Norway takes on Kazakhstan while Switzerland faces Denmark.
CANADA (7) VS. HUNGARY (1)
Calvin Pickard made 21 saves and Canada easily took care of Hungary, 7-1, Sunday at the Yubileiny Sports Palace in St. Petersburg, Russia.
Canada took a 2-0 lead before Hungary scored with 1:46 left in the first period to make the game 2-1 at the first intermission. That would be the last puck to get past Pickard, who was making his World Championship debut.
The Canadians tallied four times in 5:33 midway through the second period to put the game out of reach. Overall, Team Canada scored seven goals on 36 shots.
Matt Duchene finished with a plus-1 rating in 17:55 of ice time. He was on a line that included NHL rookies Connor McDavid and Sam Reinhart and fellow veteran Brad Marchand.
Canada will play its third game in four days on Monday when it faces Belarus.
FINLAND (5) VS. GERMANY (1)
Team Finland scored twice in both the first and second periods and defeated Germany 5-1 on Sunday at Yubileiny Sports Palace in St. Petersburg, Russia.
Avalanche prospect Mikko Rantanen did not play for the Finns.
Finland faces the United States on Monday.
SWEDEN (5) VS. DENMARK (2)
Despite falling down 1-0 in the first period, Sweden scored four times in the second frame and went on to beat Denmark 5-2 on Sunday at the Ice Palace in Moscow, Russia.
Avalanche prospect Anton Lindholm of Sweden did not play in the contest.
Sweden's next game is Monday against the Czech Republic.