Danielle Burch said Friday that Pearce's condition hadn't changed since Thursday night.
Pearce, a top-ranked halfpipe rider with a good chance of making the U.S. Olympic team, was knocked unconscious when he hit his head during a training run on Thursday.
He was taken to University of Utah hospital in Salt Lake City, where he underwent surgery.
The 22-year-old from Norwich, Vt., was preparing for next week's Olympic qualifying events in Mammoth Mountain, Calif.
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