Nathan Chen's coach provided visual evidence of just how sick the figure skater was before the national championships.

Nathan Chen became the first man to win four straight U.S. figure skating championships since 1988.

Nathan Chen will go for his third straight world championship title.

Nathan Chen tries to become the first man to win four straight U.S. figure skating titles since 1988, live on NBC Sports.

"Four elements, which are pretty valuable elements, all were facing the wrong direction,” Hubbell said.

Jessica Calalang and Brian Johnson wanted to make their first podium at the U.S. Figure Skating Championships. They did much more than that.

Madison Chock and Evan Bates pulled off a rare feat in ice dance -- reclaiming a national title.

Ever the student in the classroom and on the ice, Vincent Zhou was splitting dedication and focus between school and skating.

Alexa Scimeca Knierim and Christopher Knierim became the first pair to win three U.S. titles since 2002.

“That was probably one of the best short programs I’ve ever skated. Everything felt really calm, really paced. I felt like I was really in control of everything."

Davis and White won every U.S. title from 2009-14, plus two world crowns and 2014 Olympic gold.

Nathan Chen leads the U.S. Figure Skating Championships, but the race is on for two other world team spots.

Russia won every gold medal at the European Figure Skating Championships.

"Obviously, juggling two (priorities) is quite challenging," Karen Chen said.

Nathan Chen begins his quest for a fourth straight U.S. figure skating title, live on NBC Sports.

“Mariah took my advice and she worked hard and she transformed herself,” Adam Rippon said of his pupil.

Alysa Liu joined Ashley Wagner (2012-13) as the only women to win consecutive women’s national titles since Michelle Kwan won her last of eight straight in 2005.

Madison Chock and Evan Bates have a lead at the U.S. Championships, but the rivalry with Madison Hubbell and Zach Donohue stretches back more than 10 years.

Alysa Liu, 14, became the first woman to repeat as national champion since 2013.

Gracie Gold was brought to tears by the crowd after her first national championship since overcoming an eating disorder.

When both of their respective sibling-partners left the sport, Green and Parsons skated together while trying to figure out their next steps. So far, so good.

Can Bradie Tennell hold off 14-year-old Alysa Liu for the U.S. figure skating title?

Bradie Tennell is the center of attention at the U.S. Figure Skating Championships, whether she likes it or not.

Jason Brown won the national title the last time the event was held in Greensboro. So much has changed, he says.

Alexa Scimeca Knierim and Christopher Knierim had the best short program in years en route to the U.S. Figure Skating Championships lead.

Bradie Tennell is in first place at the U.S. Figure Skating Championships, seeking to dethrone Alysa Liu.

After the short program, Gold told media, “I guess you could say that one might be nervous for this event.”

Full results from the 2020 U.S. Figure Skating Championships in Greensboro, N.C.

Watch the U.S. Figure Skating Championships live on NBC Sports on Thursday.

Young ice dancers Christina Carreira and Anthony Ponomarenko are waiting for Carreira to gain citizenship but are aiming for the U.S. Championships podium.

Madison Hubbell and Zach Donohue train alongside Madison Chock and Evan Bates in Montreal. Both teams have won national ice dance titles.

Nathan Chen goes for a feat at the U.S. Figure Skating Championships only accomplished by six men since World War II.

Vincent Zhou left school, moved and changed coaches in the last month. His outlook for nationals is not the most optimistic.

There have been four different pair champions at the U.S. Figure Skating Championships in the past four years. All of them compete this weekend.

A crammed daily routine in a homely environment for Alysa Liu, the 14-year-old reigning national figure skating champion.

How to watch the U.S. Figure Skating Championships on NBC Sports and streaming on NBCSports.com.

Piper Gilles and Paul Poirier lead Canadian nationals despite a wardrobe malfunction.

The Opening Ceremony kicked off the Lausanne Youth Winter Games, which will include 13 days of competition.

Vincent Zhou, the closest challenger to Nathan Chen, will compete for the first time since September.

Women’s sports, mixed events and modern sports accounted for much of the growth as the Olympics continued to expand through the 2010s.

Anna Shcherbakova landed three quadruple jumps to reign over the deepest field in figure skating at the Russian National Championships.

Dominik Paris claimed the course record for World Cup downhill wins at Bormio, Italy, winning for the fourth time Friday. Paris also moved into second in the overall World Cup standings. The men have...

Alina Zagitova's break from figure skating is nothing surprising given recent history.

Yuzuru Hanyu suffered his first loss at Japanese Nationals in eight years.

Maia Shibutani learned that a tumor she had removed last Saturday was cancerous, according to the Olympic ice dancer's social media.

From Sidney Crosby to Lindsey Vonn, a look at 10 memorable medal moments of the Winter Olympics this decade.

Shaun White and Mikaela Shiffrin have impressive company among the dominant Winter Olympians of the 2010s.

Richard Callaghan was suspended after a former student filed a lawsuit alleging he was sexually abused when he was 14 years old.

Between Alena Kostornaia, Anna Shcherbakova, and Alexandra Trusova’s, how is it possible for the rest of the women in figure skating to keep pace?

Alina Zagitova, Olympic figure skating champion, said she will not compete again this season.