With two wins, Switzerland tops the group, followed by Sweden, while Japan was ranked the third and the unified Korea team the fourth on goal difference.
So far, Olympics women's hockey has been dominated by the United States and Canada.
With the National Hockey League deciding to end its Olympic involvement Canada was forced to assemble a roster of mostly anonymous journeymen and minor leaguers, the absence of marquee names having a bigger impact on attendance than on the ice as Canada rolled to a confidence-boosting win.
Though Tuesday's contest against the Finns was hard on the eyes at times - ragged play by both teams, an overabundance of whistles, some shoddy officiating and little flow - the Canadians still managed to exert their dominance.
Team Canada's start could not have been any better.
The United States certainly had plenty of chances, outshooting Canada 45-23.
"We've got great kids (nine rookies) and we've got great energy".
Agosta, 31, scored her 16th Olympic goal as she took sole possession of second place on Canada's women's all-time Olympic scoring list, pulling her within two of Hayley Wickenheiser. The U.S. defeated the Olympic Athletes from Russian Federation 5-0 in the late game on Tuesday, securing semi-final berths for both Canada and the U.S. Melodie Daoust intercepted a pass in the neutral zone and fed Aghosta to give Canada a 1-0 lead.
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On the disallowed goal, Schuler said she did not get an explanation but had no beef with the decision, saying the scoreboard showed it didn't cross the goal-line.
Jillian Saulnier became the first Nova Scotian to score a goal in Olympic women's hockey when she neatly buried a breakaway late in the second period.
Canada's record against the Finns at the world championships and Olympics now stands at 27-1-0 (6-0-0 at the Olympics).
Saulnier, who had an assist in the tournament opener on Sunday, is fitting in nicely with the offensively blessed Canadian team that has scored nine goals in two games.
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"It's always a battle playing the US", said Agosta.
The Canadian players have been so schooled to say next to nothing bolder than the one-game-at-a-time drivel that it's tough to get a read on how confident they are.
"I think (momentum) is really important", Agosta said.
After a high-tempo scoreless opening period, Canada took control in the second on a power-play goal from Meghan Agosta and another from Sarah Nurse, who found the top corner of goalie Maddie Rooney's net with a laser-like wrist shot.
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