Shiffrin shockingly crashed out during her first run in the women's giant slalom, while Kilde was simply not as quick as some surprising medal winners in the men's downhill.
See how the action unfolded in real-time below with our live blog:
As it happened
2:43 a.m. ET – Nina O'Brien 'alert and responsive'
2:32 a.m. ET – Nina O'Brien suffers brutal crash
American Nina O'Brien pushed hard to build upon her impressive first run but lost control near the end of her second run, falling forward over her skies and tumbling to the finish area. She is being tended to by medical personnel.
2:08 a.m. ET – Paula Moltzan ties the lead
After nearly crashing midway through her run and skiing several yards on one ski, Team USA's Paula Moltzan finished tied for the lead after 10 skiers.
1:45 a.m. ET – Women's giant slalom resumes
After over a quarter of the women's GS field skied out during the first run, the competition resumes in reverse order of the Run 1 standings. Current leader Sara Hector will ski 30th down the hill, while American Nina O'Brien takes off in the 25th spot.
Gold: Beat Feuz (SUI)
Silver: Johan Clarey (FRA)
Bronze: Matthias Mayer (AUS)
12:00 a.m. ET – Clarey, 41, stuns with 2nd-place run
France's Johan Clarey is in position to become the oldest Alpine skiing medalist of all time as he finishes one tenth behind Feuz and slots into the silver medal position.
11:57 p.m. ET – Travis Ganong outside top 10
Team USA's Travis Ganong finishes 1.70 off the pace.
11:52 p.m. ET – USA's Cochran-Siegle skies to eighth
Ryan Cochran-Siegle was unable to challenge for the podium places but managed to earn himself a spot in the top-10.
11:44 p.m. ET – Beat Feuz takes over gold medal spot
Switzerland's Beat Feuz, the most consistent downhill skier of all time lacking only Olympic gold on his resume, might have done enough to change that. He takes over the lead from Mayer at 1:42.69
11:39 p.m. ET – Kilde unable to catch Mayer
Norwegian favorite Aleksander Aamodt Kilde take over second place, but could not out-ski Mayer, who maintains a .35 lead.
11:33 p.m. ET – Matthias Mayer skies into first
Two-time Olympic gold medalist Matthias Mayer, who struggled mightily to find the racing line during training, set the new top time of the race at 1:42.85. The 31-year-old Austrian won the downhill at Sochi 2014 and the super-G in PyeongChang 2018.
11:22 p.m. ET – Bennett just misses top time
After a 15 minute course delay, Team USA's Bryce Bennett was on track to potentially overtake Kriechmayr before an error near the bottom of the course disrupted his time. He ends up in second by .80.
11:06 p.m. ET – 'The Rock' claims first crash victim
Dominik Schwaiger of Germany, the second skier down the mountain, suffered a rough high-speed crash which has put the event in a delay.
11:02 p.m. ET – Men's downhill underway
10:18 p.m. ET – Men's downhill coming up
10:13 p.m. ET – Mother/daughter moment
Eileen, Mikaela Shiffrin's mother and coach, offered some words of encouragement after her daughter disappointingly crashed out of the women's giant slalom.
10:05 p.m. ET – Women's GS Run 1 concludes
Sweden's Sara Hector leads the women's giant slalom at the halfway point with a first run of 57.56. With Mikaela Shiffrin out, Nina O'Brien leads all Americans in sixth place, 1.25 back of the lead. Of the 82 participants, 21 failed to make it down the course.
FULL RUN 1 RESULTS
9:10 p.m. ET – Nina O'Brien into 6th
American Nina O'Brien finishes in 58.81, good enough for sixth place after 21 skiers.
8:40 p.m. ET – Mikaela Shiffrin suffers shocking crash
Defending gold medalist Mikaela Shiffrin is out of the women's giant slalom competition after losing an edge on the icy course.
8:37 p.m. ET – Marta Bassino crashes out
Italy's Marta Bassino is the first athlete to fail to finish the course. Her crash early on in the run removes her from contention in the GS.
8:35 p.m. ET – Federica Brignone takes big lead
Federica Brignone of Italy, wearing the No. 3 bib, sets the first competitive time of 57.98, over a second faster than Vlhova and Michelle Gisin.
8:32 p.m. ET – Petra Vlhova struggles
Petra Vlhova of Slovakia, the world's top-ranked slalom skier and the first athlete down the "Ice River" course, finished in 59.34 after an error-filled run.
8:27 p.m. ET – Women's GS run 1 is LIVE!
8:11 p.m. ET – Wind conditions improving
After back-to-back days of weather postponements due to high winds at the Yanqing Alpine Skiing Center, current measurements are holding steady at a calm 2.5 m/s (5.6 mph) at the giant slalom start gate.
7:42 p.m. ET – Mikaela Shiffrin arrives
The defending Olympic giant slalom gold medalist has taken to the slopes a the Yanging Alpine Skiing Center. Coverage begins at 8:30 p.m. ET on NBC.