Lindsey Vonn of the United States reacts in the finish area after completing the Women's downhill at the Vancouver 2010 Olympics in Whistler, British Columbia, Wednesday, Feb. 17, 2010. (AP Photo/Gero Breloer)

The U.S. four-man bobsled team, gold medal winner of the Olympic championship, is shown February 6, 1948 at St. Moritz, Switzerland. Left to right: Francis Tyler, Lake Placid, NY, pilot; Pat Martin, Massena, NY; Edward Rimkus, Schenectady, NY; and William D'Amico, Lake Placid, NY. (AP Photo)

American Tara Lipinski reacts after completing her short program at White Ring Arena Wednesday, Feb. 18, 1998, in Nagano, Japan. (AP Photo/Eric Draper)

(NYT51) TURIN, Italy -- Feb. 16, 2006 -- OLY-FIGURE-SKATING-3 -- Russia's Evgeni Plushenko competing in the Men's Free Skate Program Final during Day 6 of the Turin 2006 Winter Olympic Games on February 16, 2006 at the Palavela in Turin, Italy. Plushenko won the gold medal. (Vincent Laforet/The New York Times)

Eleven-year-old Sonja Henie, left, and world champion skater Gilles Grafstrom, are shown on ice skates at the Olympic Games in Chamonix, France, in 1924. Henie won gold in the 1928, 1932, and 1936 Winter Olympic Games. Grafstrom, seven-year world champion, won the Olympic gold medal in 1920, 1924, and 1928. (AP Photo)

Jayne Torvill and Christopher Dean perform during their "Bolero" ice dancing routine at the Winter Olympics in Sarajevo, February 14, 1984. They won the gold medal. (AP Photo)

(100215) -- VANCOUVER, Feb. 15, 2010 (Xinhua) -- Germany's Aliona Savchenko (top)/Robin Szolkowy perform during the pairs free skating of Figure Skating at the 2010 Winter Olympic Games in Pacific Coliseum stadium, Canada, Feb. 15, 2010. Aliona Savchenko/Robin Szolkowy won a bronze medal of the event with a total of 210.60 points. (Xinhua/Chen Xiaowei) Xinhua News Agency / eyevine 00441580

Poland's Justyna Kowalczyk leads Norway's Heidi Weng on her way to win the gold medal in the women's 10K classical-style cross-country race, at the 2014 Winter Olympics, Thursday, Feb. 13, 2014, in Krasnaya Polyana, Russia. (AP Photo/Gregorio Borgia)

In this image made with a multiple exposure, Joss Christensen of the United States competes in the men's ski slopestyle qualifying at the Rosa Khutor Extreme Park, at the 2014 Winter Olympics, Thursday, Feb. 13, 2014, in Krasnaya Polyana, Russia. Christensen went on to win the gold medal in the event. (AP Photo/Gero Breloer)

Gus Kenworthy of the United States competes in the men's ski slopestyle final to win the silver medal at the Rosa Khutor Extreme Park, at the 2014 Winter Olympics, Thursday, Feb. 13, 2014, in Krasnaya Polyana, Russia. (AP Photo/Sergei Grits)

William Johnson of Van Nuys, Ca., speeds down the downhill course on Mount Bjelansnica near Sarajevo, Yugoslavia, at the Winter Olympic Games, Thursday, Feb. 16, 1984. Johnson won the gold medal. (AP Photo/Dieter Endlicher)

(100228) -- VANCOUVER, Feb. 28, 2010 (Xinhua) -- David Backes (R) of the United States vies with Duncan Keith of Canada during the men's ice hockey gold medal game at the 2010 Winter Olympic Games in Canada Hockey Place, Vancouver, Canada, Feb. 28, 2010. Canada won the title by beating the United States 3-2 in overtime. (Xinhua/Qi Heng) (hy) Xinhua News Agency / eyevine 00447025

Canada's team clean the ice during the women's curling gold medal match Canada vs Sweden games at the Vancouver Olympic Centre, on February 26, 2010 during the Vancouver Winter Olympics. AFP PHOTO / DIMITAR DILKOFF

Canada's Sidney Crosby (87) shoots past USA goalie Ryan Miller (39) for the game-winning goal in the overtime period of a men's gold medal ice hockey game at the Vancouver 2010 Olympics in Vancouver, British Columbia, Sunday, Feb. 28, 2010. (AP Photo/Chris O'Meara)

Norway's Staale Sandbech slides in after his last run in the men's snowboard slopestyle final at the Rosa Khutor Extreme Park, at the 2014 Winter Olympics, Saturday, Feb. 8, 2014, in Krasnaya Polyana, Russia. Sandbech won the silver medal. (AP Photo/Andy Wong)

Canada's Joannie Rochette performs her free program during the women's figure skating competition at the Vancouver 2010 Olympics in Vancouver, British Columbia, Thursday, Feb. 25, 2010. (AP Photo/Mark Baker)

Germany's Maria Riesch speeds down the course on her way to clinch the gold medal in the Women's slalom, at the Vancouver 2010 Olympics in Whistler, British Columbia, Friday, Feb. 26, 2010. (AP Photo/Luca Bruno)

Switzerland's Carlo Janka passes a gate during the first run of the Men's giant slalom, at the Vancouver 2010 Olympics in Whistler, British Columbia, Canada, Tuesday, Feb. 23, 2010. (AP Photo/Luca Bruno)

USA's Evan Lysacek performs his free program during the men's figure skating competition at the Vancouver 2010 Olympics in Vancouver, British Columbia, Thursday, Feb. 18, 2010. (AP Photo/Ivan Sekretarev)

Denmark's players, from left, Angelina Jensen, Madeleine Dupont and Camilla Jensen celebrate after winning against Canada during the bronze medal match at the World Women's Curling Championships in Gangneung, South Korea, Sunday, March 29, 2009.(AP Photo/Ahn Young-joon)