On Friday afternoon, as World Cup sprinters snap into their skis in Trondheim and the SuperTour fields gather in Fairbanks, one of the United States’ most electrifying young Nordic athletes will step onto an entirely different stage. Stanford University, the No. 1 seed in the NCAA Women’s Soccer Tournament, is marching toward the College Cup—and at the center of it all is a player who, in just a matter of days, will also begin her...