Pearce hit his head against the edge of the half pipe and was knocked unconscious. He was flown to the University of Utah Hospital in Salt Lake City, where doctors planned external ventricular drainage to relieve fluid buildup in the brain, according to Pearce’s mother, Pia.
Pearce was preparing for next week's Olympic qualifying events in Mammoth Mountain, Calif. He was considered, along with Shaun White, to be one of America's top athletes in a sport dominated by the United States.
Pearce's parents, Simon and Pia, are on their way to Salt Lake City from their home in Norwich, Vt. His agent Sue Izzo said further details are not being released.