Best of the U.S.: Maddie Bowman, Annalisa Drew, Brita Sigourney and Angeli VanLaanen.
Best of the rest: Roz Groenewould of Canada, coming off double knee surgery in December, was second behind Bowman at the recent X Games.
U.S. chances to medal: Bowman has been in the best form among the U.S. women this winter, winning three events and placing second once.
Little-known fact: Snow and water have shaped Sigourney's athletic life. She seemed to try almost every sport as a child but spent plenty of time in the water, joining the swim team in high school and then playing water polo for three years at UC Davis.