Winter Olympics Medal Tracker: Chloe Kim, Arielle Gold Add To Team USA Medal Count

After Russia's frenzy of youth success on Friday in South Korea, the United States struck back with an illustrious start to the weekend, first with a silver medal in snowboarding big air thanks to a first-time Olympian of their own on Saturday -- Friday night in Eastern time -- and then with a historic gold from John Shuster and the curling team in the wee hours of Saturday morning.

Kyle Mack, Team USA's 20-year-old snowboarding standout, outdid all but Canada's Sebastien Toutant to start the weekend haul, and then Shuster etched his name into Olympic history as the country's first men's curling champion in more than a decade.

The silver performance, which at one point seemed as if it could've been part of a U.S. podium sweep, followed the women's figure skating finale from the day before, when Alina Zagitova, just 15 years old, won a gold medal for Russia with a combined score of 239.57 -- even though Russia can't win gold medals at these Winter Olympics. Evgenia Medvedeva, Zagitova's friend and fiercest rival, settled for the silver (238.26) after both skaters made the judges squirm by turning in near-flawless long programs.

Team USA may have entered the week well below its medal forecast for the 2018 Winter Olympics, but it sure hasn't lacked for thrilling gold-medal moments. Shaun White. Chloe Kim. Kikkan Randall and Jessie Diggins. And don't forget the United States women's hockey team, which delivered the capper on the most prolific day yet for Team USA on Thursday in South Korea with a thrilling 3-2 shootout win over rival Canada for gold.