Cam Atkinson scored the winner for the United States to beat Canada 5-4 after a penalty shootout in their opening game at the ice hockey world championships on Friday 4 May.
Also, the Olympic champion, Russia, thrashed France 7-0, defending champion Sweden beat Belarus 5-0 and Denmark started its first championship on its home ground by beating Germany, the runner-up at the Pyeongchang Games, 3-2, also after a penalty.
Dylan Larkin scored twice for the United States to give Canada a poor start to its quest to win a third world title in four years.
“Hopefully, we will get better as the tournament goes on,” US captain Patrick Kane, playing his first world ice hockey championship in 10 years, said. “We can play better than that.”