Moore had a bogey-free 65, and de Jonge birdied four of the last five for a 66 to match Blixt at 19-under 194 in the Fall Series opener at TPC Summerlin.
Moore, a former UNLV player who lives in Las Vegas, won the 2009 Wyndham Championship for his lone PGA Tour title. Blixt, from Sweden, and de Jonge, from Zimbabwe, are winless on the tour.
Jimmy Walker and Tim Herron were five strokes back. Walker had a 66, and Herron shot 68.
John Daly, tied for sixth at 10 under after a season-best 63 on Friday, had a 15-over 86 to drop to last among the 72 players who made the cut. He had a quadruple bogey, a triple bogey, two double bogeys, six bogeys and two birdies in his worst round of the season.
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