Chris Kirk shot an eight-under-par 63 on Thursday to take a one-stroke lead in the OHL Classic at Mayakoba.
Kirk had four birdies on each nine in his bogey-free round on Mayakoba's Greg Norman-designed El Camaleon course in Playa del Carmen, Mexico.
The former University of Georgia player has two top-10 finishes in three starts in the new PGA Tour season, opening with a tie for eighth at Silverado and tying for second in Mississippi. He won the last of his four PGA Tour titles in 2015.
Ben Crane, Camilo Villegas and Gary Woodland were tied for second.
Mexico's Abraham Ancer bogeyed the final hole for a 65. NCAA champion Aaron Wise also was...