When: Feb. 21.
Best of the U.S.: As in Vancouver four years ago, none qualified.
Best of the rest: Marielle Thompson and Kelsey Serwa of Canada, Katrin Mueller and Fanny Smith of Switzerland, and Ophelie David of France.
U.S. chances to medal: None.
Little-known fact: Vancouver gold medalist Ashleigh McIvor, who retired after suffering a serious knee injury in 2011, will be in the broadcast booth for the CBC in Sochi.