Matt and Becca Hamilton made their Olympic debut in the games' first match of mixed doubles curling. Finland was the only winless team (0-4) and had the daunting task of challenging Norway to get off the schneid.
Olympic rookie Kevin Bickner finished the qualifying round in 25th with a distance of 98 meters and a total score of 114.0 points.
Canada and Team OAR are already guaranteed two of the four semifinal spots in mixed doubles curling, but three others teams - Switzerland, Norway and China - will be fighting it out tonight for the other two.
Becca Hamilton threw her final rock, which needed to get to the button - the center of the bull's eye-shaped target - in order to preserve their lead.
The U.S. team fell 6-4 to Wang Rui and Ba Dexin of China on Saturday in Gangneung, South Korea, for their fourth straight loss in the tournament.
Matt shot 83 percent in the game, while his sister shot 88 percent.
Matt and Becca Hamilton are the lone United States representatives in this eight-team tournament. Matt, 28, and Becca, 27, decided they wanted to compete together.
Its latest triumph was a tense 6-5 overtime victory against South Korea.
Arsenal can still win English Premier League title, says Mohamed Elneny
If you look at what he's done from a wide perspective - as a winger - and to be a goal behind Harry Kane in the golden boot is absolutely wonderful .
Mom Wearing Alabama, Tennessee Gear Storms Off After Son Picks Florida
So that's what made it a bit surprising when Copeland reached forward and grabbed the Florida hat to confirm he'd be a Gator. While her reaction was clear, that was nothing compared to how Jacob Copeland's mom felt on Wednesday.
Pence out to counter N. Korean 'propaganda' at Olympic Games
Moon has looked to the games as an opportunity to pursue a diplomatic opening with the North - a move Pence cautioned against. But hopes for détente have been tempered by deep skepticism over the North's sudden overtures.
The Americans started strongly and never looked back in a nine-to-three win over married Russian couple Bryzgalova and Krushelnitskiy in the first of seven rounds of preliminary play.
Team USA continued to add to their lead in the fifth by scoring two after Aleksandr Krushelnitckii burned a rock, continuing the woes of Team OAR and forcing them to use the power play in the sixth end.
Canada is guaranteed the No. 1 seed in the semifinals.
After coming out of the first end trailing by one, the Canadians took a 4-1 lead in the second end and would finish the game without allowing a Switzerland score in the final five ends.
Krushelnitskiy was a flawless 5-of-5 in takeouts, including knocking three South Korean stones out of the target zone in overtime that led to the deciding point.
John Morris, who won an individual gold medal at the 2010 Olympics, was particularly adept at keeping Switzerland off the board with six takeouts. That's "when we decided that we should try out for it because it is another opportunity in the Olympics and (the) brother-sister duo".
After Switzerland tied the score for the first time in the seventh end, they took advantage of USA mistakes, placing all of their rocks on the house for the five point win.