Canada's gold-medal streak in Olympic women's hockey ended Thursday with a 3-2 shootout loss to the United States at the Pyeongchang Winter Games.
Lamoureux-Davidson scored the deciding goal and rookie American goalie Maddie Rooney stopped Meghan Agosta to end the game, forcing Canada to settle for a silver medal.
The win was redemption for the Americans, who lost in overtime four years ago in Sochi.
Hilary Knight and Monique Lamoureux-Morando scored in regulation for the Americans.
Marie-Philip Poulin and Haley Irwin replied for Canada.
Canada had won four straight golds in women's hockey, losing only in 1998 when the sport made its Olympic debut.
No final had ever been decided by a shootout.
Canada was third in the overall medal standings with 22 after Thursday's game, including nine gold, six silver and seven bronze.