American Scottie Scheffler shot a one-under 69 to be a one-shot leader after three rounds of the Hewlett Packard Enterprise Houston Open.
On a day where low scores were hard to come by, the US Ryder Cup hero matched two bogeys with three birdies - including chipping in from 55 feet on the 14th - to claw three spots up the leaderboard on Saturday.
At seven-under for the tournament he leads from a quintet at six-under including Venezuela's Jhonattan Vegas and American Martin Trainer, the second round leader who followed two straight 65s with a four-over 74.
Aaron Rai, the only Briton to make the cut, shot an even 70 to be in a tie for 34th at even par for the tournament.
Shane Lowry, Graeme McDowell and Seamus Power all failed to make the cut.