Brianna Decker scored twice as the United States overcame 56 saves by Swiss goaltender Florence Schelling for a 5-0 victory Friday at the Women's World Championships in Ottawa.
Schelling kept the United States off the scoreboard until Alex Carpenter and Decker scored in a 10-second span during the final minute of the first period to put the Americans up 2-0.
"We had a bit of a slow start, but we responded well to the penalties and didn't let them frustrate us," forward Monique Lamoureux told the IIHF's website. "Those two goals at the end of the period were huge for us. It was a big momentum swing and carried over to the second and third periods."
The United States outshot Switzerland 21-0 in the second period but beat Schelling once, when Decker lifted home a rebound. Kendall Coyle and Julie Chu added third-period goals for the United States (2-0-0-1, 7 points).
American goalie Jessie Vetter stopped six shots -- five in the first period -- for the shutout. Switzerland has lost all three of its games in regulation, the only team in the tournament that failed to register a point in the preliminary round.
In the other Group A game, Canada claimed first place by routing Finland 8-0 before 18,013 fans at Scotiabank Place -- the largest crowd ever to see a women's hockey game. Megan Agosta-Marciano had a pair of goals for Canada, which finished 2-1-0-0 for 8 points.
In Group B, Russia improved to 3-0-0 and assured itself of first place by blanking Sweden 4-0. Germany defeated the Czech Republic 6-3 to earn second place.