The first men's big air Olympic champion will be crowned Saturday (Friday evening in the U.S.). Canada's Max Parrot and New Zealand's Carlos Garcia Knight finished first in their respective heats and qualified for the final. Three U.S. snowboarders, including slopestyle gold medalist Red Gerard, made the cut.
The U.S. men's curling team will play in its first Olympic final after a surprising win against defending champion Canada. The U.S. will face Sweden for the gold.
It's the penultimate day of the 2018 Pyeongchang Olympics, but there are a lot of gold medals on the line. Here are the most notable events to watch:
Snowboarding
Men's big air final (Friday, 9 p.m. ET/Saturday, 11 a.m. local time): Seventeen-year-old Olympic gold medalist Red Gerard won the slopestyle event, then went back to the U.S. for a media tour. Now he's back in Pyeongchang and in Friday's final. In addition to Red, who finished sixth in the qualifiers, two other U.S. snowboarders -- Kyle Mack and Chris Corning -- made it to the final.
Canada's Max Parrot finished second on the podium behind Gerard in slopestyle, but he was in complete control in the qualifiers of this event, finishing first in Heat 1. He will go up against the other top contender, New Zealand's Carlos Garcia Knight. One of the big favorites, Marcus Kleveland, was eliminated after a fall in qualifying. He was the 2017 and 2018 Winter X Games winner.
Women's parallel giant slalom final (Saturday, 12:30 a.m. ET/2:30 p.m. local time): Ester Ledecka of the Czech Republic is a celebrated snowboarder. She is the current world champion in the parallel giant slalom event. Last week, Ledecka caused one of the biggest upsets of Winter Olympics by winning gold in super-G. She beat veterans Lindsey Vonn, Anna Veith and Tina Weirather despite racing on skis she borrowed from Mikaela Shiffrin. Now, Ledecka is competing in one of her marquee events, and if she wins, she will become the first Olympian to complete a ski-snowboard double.
Also look out for Austria's Julia Dujmovits, who will go for her first gold medal in the parallel giant slalom. She won gold in Sochi in parallel slalom.
Men's parallel giant slalom final (Saturday, 12:37 a.m. ET/2:37 p.m. local time): Sochi silver medalist Nevin Galmarini, of Switzerland, is back and looking for his first slice of gold. Competing against him is Italy's Roland Fischnaller, who has won several world championships in the event. This will be his fourth Olympics.
Alpine skiing
Mixed team final (Friday, 10:34 p.m. ET/Saturday, 12:34 a.m. local time): World champion France faced a setback Monday when lead skier Mathieu Faivre was sent home from Pyeongchang after criticizing his team during a presser. He finished seventh in the giant slalom behind three of his countrymen and said he was "disgusted" with the result and was there to compete only for himself. Speaking of athletes who won't compete, Team USA's Mikaela Shiffrin (and Faivre's girlfriend) and Lindsey Vonn have opted out of the event. The other top medal contender is Austria, but it is going into the event without its strongest athlete, Marcel Hirscher, who pulled out to focus on individual races.
Cross-country
Men's 50km classic style (Saturday, 12 a.m. ET/2 p.m. local time): Norway's Martin Johnsrud Sundby already has three Pyeongchang medals to his name -- 4x10km relay gold, team sprint gold and 30km skiathlon silver. When he walks out to compete Saturday, he will be the favorite to win another gold, this time in 50km classic style.
Going up against Sundby will be Canada's Alex Harvey. He won the 2017 world championship and will compete for his first Olympic medal. Sochi gold medalist Alexander Legkov of Russia was banned from the Pyeongchang Olympics for doping.
Curling
Men's curling gold-medal match, USA vs. SWE (Saturday, 1:35 a.m. ET/3:35 p.m. local time): The U.S. men shocked Canada 5-3 in the semifinals. Canada had won three straight Winter Olympics in the event (2006, 2010 and 2014), and the Americans had never won an Olympic semifinal. But they will now face Sweden in the final, and even the silver for a loss would be their best result in the Winter Olympics. The previous U.S. best was a bronze medal in 2006.
Speedskating
Women's mass start 16 laps final (Saturday, 7:30 a.m. ET/9:30 p.m. local time): Speedskating is one of the most regimented winter sports. But this year, the authorities have decided to throw an element of chaos into the event for the first time with the mass start, in which every participant begins at the same time.
South Korea's Kim Bo-reum is the current world champion and will race for her first Olympic medal. Competing against her will be Italy's Francesca Lollobrigida, who won gold in the European championship this January.
Men's mass start 16 laps final (Saturday, 8 a.m. ET/10 p.m. local time): In the men's event, Netherlands' Sven Kramer will be back with his eye on a third Pyeongchang medal. He won gold in 5000m and bronze in team pursuit and will go up against veterans such as Team USA's Shani Davis and Joey Mantia (the 2017 world championship gold medalist) and South Korea's Lee Seung-hoon. The 29-year-old South Korean is coming off a silver-medal skate in the team pursuit.