Hilary Knight, a two-time Olympic silver medalist, scored 36 seconds into overtime to lift the U.S. over Canada 3-2 in the Four Nations Cup final in Sundsvall, Sweden, on Sunday.
Brianna Decker, also a Sochi silver medalist, potted the other two goals as the U.S. twice erased deficits to finish the tournament 4-0 with a 19-4 goal differential against Canada (twice), Finland and Sweden.
Jessie Vetter, who started and lost the last two Olympic finals versus Canada, beat the Canadians in both Four Nations Cup games.
The U.S., coached by former NHL defenseman Ken Klee for the second straight year, won the Four Nations Cup for the first time since 2012.
Klee also coached the Americans to a World Championship in April in Sweden.
The 2016 World Championship will be in Kamloops, Canada, in March and April.
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