A friendly rebound dropped to an alert Lamoureux-Davidson, and she tapped in to double Team USA's lead.
Lamoureux-Davidson not only topped Canada's Caroline Oullette, who scored twice in 16 seconds on February 11, 2006, in a 16-0 rout of Italy at Turin, but also the men's mark held by Carl Goran Oberg of Sweden in 1960 at Squaw Valley.
Team USA will close preliminary round action Thursday (Feb. 15) when it takes on Canada.
Littleton resident Nicole Hensley made 13 saves in her Olympic debut as OAR was shut out for the second time in as many appearances. The pair of goals helped the Americans roll to a second consecutive win to open the group stage in Pyeongchang. The last time these teams met in the Olympics, Canada rallied from a 2-0 deficit to win its fourth straight gold in overtime in 2014 in Sochi.
Jocelyne Lamoureux-Davidson then fooled Russian goaltender Valeria Tarakonova by faking a wrist shot before pulling the puck to her backhand and lifting it home. The goal increased Agosta's career Olympic tally to 16-two shy of tying compatriot Hayley Wickenheiser's all-time record.
Jocelyne Lamoureux-Davidson can't remember ever scoring twice on the same shift. Lamoureux-Davidson added two goals, and Gigi Marvin and Hannah Brandt each had a goal. As a team, the Americans recorded 50 shots on the net compared to just 13 for O.A.R.
On the ensuing face-off, two OAR defenders misplayed the puck and No. 17 converted a breakaway to give the US a three-goal advantage and create the memory of a lifetime. Lamoureux-Morando fired a shot through traffic from the right circle.
"We're just going to carry the momentum we had in this game here", USA coach Robb Stauber said.
Marvin's goal off a rebound at 14:38 gave the Americans a 4-0 lead.