Andrew Landry and Scottie Scheffler have broken away at The American Express golf tournament in California, going into the final round at 21-under 195.
Landry shot a seven-under 65 at PGA West's Jack Nicklaus Tournament Course in La Quinta to join Scheffler atop the leaderboard, four strokes ahead of third-place Rickie Fowler.
Scheffler had a 66 on the adjacent Stadium Course, also the site of the final round on Sunday.
"It's a tough course. It's a good track," Scheffler said.
"If you're not on your game, you can really struggle. There's a lot of trouble out there so you've got to hit a lot of quality shots to keep the ball in play. Good test."
Fowler, tied with Scheffler for the second-round lead, overcame two front-nine bogeys to shoot 70 at the Stadium Course.
At the event for the first time in six years, he played the Pete Dye-designed course for the time Saturday after only taking a quick scouting drive early in the week.
Ryan Moore and Chase Seiffert were five strokes back at 16 under. Moore had a 67 at the Stadium, and Seiffert shot 67 on the Nicklaus layout.
Australian Cameron Davis was 11 under after hitting a 72. Cameron Percy, Greg Chalmers and Aaron Baddeley were among his compatriots who didn't make the cut.
Tournament host Phil Mickelson missed the cut by six strokes. The 49-year-old Hall of Famer finished three rounds at three under. He eagled the par-5 16th on Saturday in a 71.
Landry lost a playoff to Jon Rahm two years ago at PGA West. The 32-year-old Texan has found something in the desert after missing the cuts in seven of eight starts this season.
"It's been a heck of a week so far with my ball-striking," Landy said.
"Just kind of one day's ball-striking, the next day's putting and putting's just been here all week. So, we'll just keep riding it out and see what happens tomorrow."