White, the two-time reigning Olympic halfpipe champion, prevailed with 95.20 points in the first of his two runs in the second of two finals in Mammoth Mountain, Calif., on Thursday.
White opted not to take his second run, a decision that carried risk, but no rider beat his score.
White crashed in the earlier final but showed no ill-effects four hours later. He will try to qualify for the Olympic Team in halfpipe with two finals Friday and another Sunday in Mammoth Mountain.
In slopestyle, White goes into Sochi looking up at gold-medal favorite Mark McMorris of Canada.
McMorris, 20, won the Winter X Games slopestyle last January, where White finished fifth.