AUGUSTA, Ga. >> The third iteration of Bryson DeChambeau might be the most daunting at the Masters.

Once the mad scientist, then the incredible bulk, DeChambeau has entered what he called simply the “golf phase,” and it was enough to carry him to a 7-under 65 in a relentless wind Thursday for a one-shot lead over the same old Scottie Scheffler.

The first round could not be completed because of a 2 1/2-hour delay from overnight rain that drenched Augusta National, leaving the greens softer than they have been all week. The test came from a steady 20 mph wind, with gusts twice that strong.

Among those still on the course was Tiger Woods, who was 1-under par through 13 holes when it was too dark to continue. He next faces 23 holes Friday, an endurance test for his battered legs, as he tries to set the Masters record by making his 25th consecutive cut.

Nicolai Hojgaard of Denmark, one of 17 newcomers to the Masters, was at 5 under with three holes to play. Max Homa was at 4 under through 13 holes.

DeChambeau had his lowest start ever in a major, a clinical performance of power and putting, always a good recipe at Augusta National.

“Trying to be the best golfer I can be,” DeChambeau said. “I’m just in a place where I’m repeating a motion, trying to do the same thing over and over again.”

He ran off five birdies in a six-hole stretch on the back nine, including a two-putt birdie on the par-5 15th when his risky shot under a pine tree cleared the water fronting the green and left him 40 feet away.

“It clipped the tree. I hit four pine needles rather than five, and it worked out perfectly,” said DeChambeau, not entirely rid of his precise calculations.

Scheffler teed off about two hours later when the wind was at full force, and part of him was surprised to see so many red numbers under par on the large, white boards.

“I’ve played this tournament once before in some pretty high winds, and it’s an extremely challenging golf course,” Scheffler said, giving credit to caddie Ted Scott for “guessing the wind correctly” on a number of shots.

He had the only bogey-free round of the 89 players in the field, no small task on a day like this. Three of his six birdies came on the par 3s, one of those when he holed a bunker shot from behind the 12th green.

DeChambeau feels he got fortunate with his shot that grazed the tree. There was no doubting the break Scheffler got with his second shot on the par-5 13th, when he flinched upon hearing a shot hit from another fairway. Scheffler’s ball came up short, and he assumed it would roll back into the tributary of Rae’s Creek that winds in front of the green.

The turf was soft enough that it stayed up, and he chipped it close to make birdie.

“I’ve never seen a ball stay up there,” Scheffler said. “I don’t know if that will happen again this week. I’m hoping I don’t find out.”

Scheffler began as the 4-1 favorite, according to FanDuel Sportsbook, the shortest odds since Tiger Woods nearly two decades ago. And then the No. 1 player in the world — who came into the Masters off two wins and a runner-up finish — played as expected.

It was his ninth bogey-free round of the year.

“Any time you can get around this golf course bogey-free, you’re going to have a pretty good day out there,” Scheffler said.

DeChambeau dropped only one shot, a long three-putt to a back pin on No. 9, and otherwise was flawless. He nearly drove the short par-4 third hole, leaving him a chip-and-putt birdie. He took care of three of the par 5s and got a bonus at the end when he holed a 30-foot birdie putt on the 17th hole.

DeChambeau feels he has settled in with his new life on Saudi-funded LIV Golf, with his equipment and his swing. He is not chasing swing speed like he once did, though he still has it when needed. He says his swing has been the same since that 61-58 weekend he had at LIV Golf Greenbrier last summer.

“He’s always been one of the best putters in the world. When he drives it like he did today — I mean, he drove it really good — and he makes putts, he’s obviously very good,” said Gary Woodland, who played alongside him. “It was a clinic. It was impressive. He didn’t get out of position hardly at all, and he rolled it very, very nice.”

Defending champion Jon Rahm never got any momentum and bogeys on his last two holes sent him to a 73, leaving him eight shots behind.

“Those are some seriously good rounds in conditions like today,” Rahm said. “I haven’t made it easy for myself. I’m going to have to start making up ground quickly.”

Rory McIlroy at least didn’t shoot himself out of the tournament after one round. In his 10th bid for the final leg of the career Grand Slam, he saved par with a chip from behind the 18th green for a 71, the first time he has opened the Masters with a round under par since 2018.

“I held it together well. It was a little scrappy,” McIlroy said. “Probably turned a 3 under into a 1 under there at the end. But overall, still not a bad score. And obviously a lot of golf left to play.”

The first round was to resume at 7:50 a.m., and with a good forecast for the rest of the week, the Masters should be back on schedule by the weekend.