Golf-Thomas takes third-round lead in Mexico as DeChambeau fades

Justin Thomas made bookend bogeys but piled up eight birdies in between en route to a one-shot lead over Patrick Reed and Erik van Rooyen at the WGC-Mexico Championship on Saturday. On a day when overnight leader Bryson DeChambeau self-destructed, Thomas carded six-under-par 65 at Club de Golf Chapultepec in Mexico City.

Two years after losing a playoff to Phil Mickelson, Thomas has a chance to avenge that near-miss, going into Sunday's final round at 15-under 198. Fellow American Reed (67) hit an unusually poor bunker shot to bogey the final hole and slip back into a tie for second with South African van Rooyen (67).

American DeChambeau struggled to a 71 and fell back into a tie for fourth with Spaniard Jon Rahm (61) and Northern Irishman Rory McIlroy (68), four strokes from the lead. Rahm's course record includes a hole-in-one on the 17th.

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