The top curlers in the U.S. compete in the Mixed Doubles Nationals. All eyes are on U.S. curling legend and Olympic Gold Medalist, John Shuster, but teams led by rising stars (and twin sisters) Taylor and Sara Anderson, and the underdogs anchored by Delaney Strouse, set their sights on America's Curling king. Only one team will represent America at the World Championship in Korea.