Amid the wind and the havoc at Kiawah Island, there was a semblance of simplicity to the way Corey Conners navigated his way around the Ocean Course for a 5-under 67 and a two-shot lead Thursday in the PGA Championship.

He birdied all the par 5s. He made a couple of long putts for birdie. He dropped only one shot. The scorecard alone made it look like a walk on the beach.

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Brooks Koepka misses a birdie putt on the ninth hole during the first round of the PGA Championship golf tournament on the Ocean Course Thursday, May 20, 2021, in Kiawah Island, S.C. (AP PhotoDavid J. Phillip)

Amid the wind and the havoc at Kiawah Island, there was a semblance of simplicity to the way Corey Conners navigated his way around the Ocean Course for a 5-under 67 and a two-shot lead Thursday in the PGA Championship.

Brooks Koepka waits to putt on the 13th green during the first round of the PGA Championship golf tournament on the Ocean Course Thursday, May 20, 2021, in Kiawah Island, S.C. (AP PhotoMatt York)

“I'd say it's impossible to be stress-free around this golf course,” Conners said. “You can't fall asleep out there on any holes. It's very challenging. I was fortunate to have a good day. Made it as least stressful as possible on myself.”

Bernd Wiesberger, of Austria, sits on the ground as he waits for another golfer to find a ball on the 16th hole during the first round of the PGA Championship golf tournament on the Ocean Course Thursday, May 20, 2021, in Kiawah Island, S.C. (AP PhotoMatt York)

Keegan Bradley, Viktor Hovland, Aaron Wise and Sam Horsfield also were at 69. The seven players to break 70 were the fewest for the opening round of the PGA Championship since there were five at Hazeltine in 2002.

Bryson DeChambeau takes his second shot on the second hole during the first round of the PGA Championship golf tournament on the Ocean Course Thursday, May 20, 2021, in Kiawah Island, S.C. (AP PhotoDavid J. Phillip)

His opening tee shot on the 10th hole at Kiawah Island was struck poorly and didn't quite clear a waste area. Koepka tried to do too much from a soft lie in the sand and barely got it out. It led to a double bogey, and the toughest part of the Ocean Course was still to come.

John Daly carts up the 16th fairway during the first round of the PGA Championship golf tournament on the Ocean Course Thursday, May 20, 2021, in Kiawah Island, S.C. (AP PhotoMatt York)

So did 50-year-old Phil Mickelson, who had four bogeys through six holes and nothing but birdies and pars the rest of the way to join the large group at 70 that included defending champion Collin Morikawa and former U.S. Open champion Gary Woodland.

Phil Mickelson hits out of the bunker on the 17th hole during the first round of the PGA Championship golf tournament on the Ocean Course Thursday, May 20, 2021, in Kiawah Island, S.C. (AP PhotoChris Carlson)

Justin Thomas took double bogey on the 18th hole in the morning and two holes later sent a sand shot over the green and just into a hazard for another 6 on the par-5 second. He had a 75.

Viktor Hovland, of Norway, smiles after his tee shot on the seventh hole during the first round of the PGA Championship golf tournament on the Ocean Course Thursday, May 20, 2021, in Kiawah Island, S.C. (AP PhotoDavid J. Phillip)

The PGA of America moved up tee boxes, as expected, to account for the wind. The course played to 7,660 yards — 178 yards shorter than the scorecard — though that didn't make it easy. Thomas, for one, still hit 7-wood into the 214-yard 17th.

Keegan Bradley chips to the 18th green during the first round of the PGA Championship golf tournament on the Ocean Course Thursday, May 20, 2021, in Kiawah Island, S.C. (AP PhotoMatt York)

“I kind of went out with the mindset this week, even though it’s hard, don’t give the course too much respect," Laird said. "You still have to take on shots when you have the chance. When I had a spot where I could go at the flag, I was making sure I kept doing it and hit a lot of really nice shots and managed to make some birdies.

John Daly walks past the winners trophy on the first tee during the first round of the PGA Championship golf tournament on the Ocean Course Thursday, May 20, 2021, in Kiawah Island, S.C. (AP PhotoDavid J. Phillip)

He began with a poor 3-wood on No. 10 that didn't clear the waste area. He took on too much with a soft lie in the sand and barely got it out, leading to a double bogey. But he didn't flinch and had few complaints about his start.

Rory McIlroy, of Northern Ireland, misses a birdie putt on the ninth hole during the first round of the PGA Championship golf tournament on the Ocean Course Thursday, May 20, 2021, in Kiawah Island, S.C. (AP PhotoDavid J. Phillip)

Rory McIlroy, of Northern Ireland, misses a birdie putt on the ninth hole during the first round of the PGA Championship golf tournament on the Ocean Course Thursday, May 20, 2021, in Kiawah Island, S.C. (AP PhotoDavid J. Phillip)

Justin Thomas adjusts his hair on the ninth hole during the first round of the PGA Championship golf tournament on the Ocean Course Thursday, May 20, 2021, in Kiawah Island, S.C. (AP PhotoChris Carlson)

Justin Thomas adjusts his hair on the ninth hole during the first round of the PGA Championship golf tournament on the Ocean Course Thursday, May 20, 2021, in Kiawah Island, S.C. (AP PhotoChris Carlson)

Justin Thomas watches his shot on the ninth tee during the first round of the PGA Championship golf tournament on the Ocean Course Thursday, May 20, 2021, in Kiawah Island, S.C. (AP PhotoDavid J. Phillip)

Justin Thomas watches his shot on the ninth tee during the first round of the PGA Championship golf tournament on the Ocean Course Thursday, May 20, 2021, in Kiawah Island, S.C. (AP PhotoDavid J. Phillip)

Justin Thomas takes his second shot on the second hole during the first round of the PGA Championship golf tournament on the Ocean Course Thursday, May 20, 2021, in Kiawah Island, S.C. (AP PhotoDavid J. Phillip)

Justin Thomas takes his second shot on the second hole during the first round of the PGA Championship golf tournament on the Ocean Course Thursday, May 20, 2021, in Kiawah Island, S.C. (AP PhotoDavid J. Phillip)

Corey Conners, of Canada, putts on the 18th hole during the first round of the PGA Championship golf tournament on the Ocean Course Thursday, May 20, 2021, in Kiawah Island, S.C. (AP PhotoMatt York)

Corey Conners, of Canada, putts on the 18th hole during the first round of the PGA Championship golf tournament on the Ocean Course Thursday, May 20, 2021, in Kiawah Island, S.C. (AP PhotoMatt York)

Dustin Johnson takes his second shot on the first hole during the first round of the PGA Championship golf tournament on the Ocean Course Thursday, May 20, 2021, in Kiawah Island, S.C. (AP PhotoDavid J. Phillip)

Dustin Johnson takes his second shot on the first hole during the first round of the PGA Championship golf tournament on the Ocean Course Thursday, May 20, 2021, in Kiawah Island, S.C. (AP PhotoDavid J. Phillip)

Jordan Spieth watches his tee shot on the 12th hole during the first round of the PGA Championship golf tournament on the Ocean Course Thursday, May 20, 2021, in Kiawah Island, S.C. (AP PhotoMatt York)

Jordan Spieth watches his tee shot on the 12th hole during the first round of the PGA Championship golf tournament on the Ocean Course Thursday, May 20, 2021, in Kiawah Island, S.C. (AP PhotoMatt York)

It just didn't feel that way.

Brooks Koepka misses a birdie putt on the ninth hole during the first round of the PGA Championship golf tournament on the Ocean Course Thursday, May 20, 2021, in Kiawah Island, S.C. (AP PhotoDavid J. Phillip)

Brooks Koepka misses a birdie putt on the ninth hole during the first round of the PGA Championship golf tournament on the Ocean Course Thursday, May 20, 2021, in Kiawah Island, S.C. (AP PhotoDavid J. Phillip)

“I'd say it's impossible to be stress-free around this golf course,” Conners said. “You can't fall asleep out there on any holes. It's very challenging. I was fortunate to have a good day. Made it as least stressful as possible on myself.”

With a stiff wind into his face for his last five holes, the 29-year-old Canadian played the tough closing stretch in 2 under, one of those birdies a 55-foot putt from just short of the green.

He led by two shots over a half-dozen players. That group included Brooks Koepka, who started his day with a double bogey and stayed largely out of trouble the rest of the way; and Cameron Davis, who overcame a triple bogey on the sixth hole.

Brooks Koepka waits to putt on the 13th green during the first round of the PGA Championship golf tournament on the Ocean Course Thursday, May 20, 2021, in Kiawah Island, S.C. (AP PhotoMatt York)

Brooks Koepka waits to putt on the 13th green during the first round of the PGA Championship golf tournament on the Ocean Course Thursday, May 20, 2021, in Kiawah Island, S.C. (AP PhotoMatt York)

Keegan Bradley, Viktor Hovland, Aaron Wise and Sam Horsfield also were at 69. The seven players to break 70 were the fewest for the opening round of the PGA Championship since there were five at Hazeltine in 2002.

“I definitely knew in my preparation that it was possible to have a decent round out here and shoot a 5-, 6-under par round,” Conners said. “So kind of started the day thinking, ‘Why not me?’ There's birdies to be had.”

No one needed them like Koepka, a major presence when conditions are severe. One hole into this major, he had reason to be more worried about his brain than his ailing right knee.

Bernd Wiesberger, of Austria, sits on the ground as he waits for another golfer to find a ball on the 16th hole during the first round of the PGA Championship golf tournament on the Ocean Course Thursday, May 20, 2021, in Kiawah Island, S.C. (AP PhotoMatt York)

Bernd Wiesberger, of Austria, sits on the ground as he waits for another golfer to find a ball on the 16th hole during the first round of the PGA Championship golf tournament on the Ocean Course Thursday, May 20, 2021, in Kiawah Island, S.C. (AP PhotoMatt York)

His opening tee shot on the 10th hole at Kiawah Island was struck poorly and didn't quite clear a waste area. Koepka tried to do too much from a soft lie in the sand and barely got it out. It led to a double bogey, and the toughest part of the Ocean Course was still to come.

But this is a major, and this is Koepka, and that's when he's at his best. He knuckled down from that mess by running off six birdies the rest of the way.

“You can’t do that stuff if you want to win. You’ve just got to be more focused,” said Koepka, who has played only twice in the last three months because of surgery to repair ligaments in his knee. “I don’t know if that’s a lack of not playing or what. It was just stupid. I was able to recover, I guess.”

Bryson DeChambeau takes his second shot on the second hole during the first round of the PGA Championship golf tournament on the Ocean Course Thursday, May 20, 2021, in Kiawah Island, S.C. (AP PhotoDavid J. Phillip)

Bryson DeChambeau takes his second shot on the second hole during the first round of the PGA Championship golf tournament on the Ocean Course Thursday, May 20, 2021, in Kiawah Island, S.C. (AP PhotoDavid J. Phillip)

So did 50-year-old Phil Mickelson, who had four bogeys through six holes and nothing but birdies and pars the rest of the way to join the large group at 70 that included defending champion Collin Morikawa and former U.S. Open champion Gary Woodland.

More telling were those on the other side of par, some of whom will be scrambling to make it to the weekend.

Dustin Johnson, the No. 1 player in the world in the midst of his worst stretch in nearly two years, took a double bogey from a wild tee shot on the front nine and a double bogey on the 18th for a 76. He's in jeopardy of missing the cut in consecutive majors in the same year for the first time in his career.

John Daly carts up the 16th fairway during the first round of the PGA Championship golf tournament on the Ocean Course Thursday, May 20, 2021, in Kiawah Island, S.C. (AP PhotoMatt York)

John Daly carts up the 16th fairway during the first round of the PGA Championship golf tournament on the Ocean Course Thursday, May 20, 2021, in Kiawah Island, S.C. (AP PhotoMatt York)

Justin Thomas took double bogey on the 18th hole in the morning and two holes later sent a sand shot over the green and just into a hazard for another 6 on the par-5 second. He had a 75.

Rory McIlroy, coming off a victory at Quail Hollow two weeks ago, sent his opening tee shot into a water hazard. He salvaged a bogey, but certainly not his round. McIlroy made bogey on three of the par 5s for a 75, his worst start ever in a PGA Championship.

Jordan Spieth, who needs a victory to complete the career Grand Slam, shot 73.

Phil Mickelson hits out of the bunker on the 17th hole during the first round of the PGA Championship golf tournament on the Ocean Course Thursday, May 20, 2021, in Kiawah Island, S.C. (AP PhotoChris Carlson)

Phil Mickelson hits out of the bunker on the 17th hole during the first round of the PGA Championship golf tournament on the Ocean Course Thursday, May 20, 2021, in Kiawah Island, S.C. (AP PhotoChris Carlson)

The PGA of America moved up tee boxes, as expected, to account for the wind. The course played to 7,660 yards — 178 yards shorter than the scorecard — though that didn't make it easy. Thomas, for one, still hit 7-wood into the 214-yard 17th.

John Daly was among 12 players who shot in the 80s. On the 30-year anniversary of his PGA Championship victory at Crooked Stick, he shot 85.

There were birdies to be had, and mistakes to be made, and Martin Laird was example of both. So wild was his round that he he made bogey on No. 12, ran off four straight birdies and then closed with two bogeys. That added to a 70, not a bad day's work.

Viktor Hovland, of Norway, smiles after his tee shot on the seventh hole during the first round of the PGA Championship golf tournament on the Ocean Course Thursday, May 20, 2021, in Kiawah Island, S.C. (AP PhotoDavid J. Phillip)

Viktor Hovland, of Norway, smiles after his tee shot on the seventh hole during the first round of the PGA Championship golf tournament on the Ocean Course Thursday, May 20, 2021, in Kiawah Island, S.C. (AP PhotoDavid J. Phillip)

“I kind of went out with the mindset this week, even though it’s hard, don’t give the course too much respect," Laird said. "You still have to take on shots when you have the chance. When I had a spot where I could go at the flag, I was making sure I kept doing it and hit a lot of really nice shots and managed to make some birdies.

“You’re going to hit bogeys on this golf course,” he said. “It’s nice when you can throw in a bunch of birdies, too.”

Finally heeled from a left knee injury, Koepka injured ligaments in his right knee in March and has played only twice since then, the Masters and last week in Dallas.

Keegan Bradley chips to the 18th green during the first round of the PGA Championship golf tournament on the Ocean Course Thursday, May 20, 2021, in Kiawah Island, S.C. (AP PhotoMatt York)

Keegan Bradley chips to the 18th green during the first round of the PGA Championship golf tournament on the Ocean Course Thursday, May 20, 2021, in Kiawah Island, S.C. (AP PhotoMatt York)

He began with a poor 3-wood on No. 10 that didn't clear the waste area. He took on too much with a soft lie in the sand and barely got it out, leading to a double bogey. But he didn't flinch and had few complaints about his start.

“It's a major. I'm going to show up. I'm ready to play,” he said. “I love it when it’s difficult. I think that’s why I do so well in the majors. I just know mentally I can grind it out.”

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John Daly walks past the winners trophy on the first tee during the first round of the PGA Championship golf tournament on the Ocean Course Thursday, May 20, 2021, in Kiawah Island, S.C. (AP PhotoDavid J. Phillip)

John Daly walks past the winners trophy on the first tee during the first round of the PGA Championship golf tournament on the Ocean Course Thursday, May 20, 2021, in Kiawah Island, S.C. (AP PhotoDavid J. Phillip)

Rory McIlroy, of Northern Ireland, misses a birdie putt on the ninth hole during the first round of the PGA Championship golf tournament on the Ocean Course Thursday, May 20, 2021, in Kiawah Island, S.C. (AP PhotoDavid J. Phillip)

Rory McIlroy, of Northern Ireland, misses a birdie putt on the ninth hole during the first round of the PGA Championship golf tournament on the Ocean Course Thursday, May 20, 2021, in Kiawah Island, S.C. (AP PhotoDavid J. Phillip)

Justin Thomas adjusts his hair on the ninth hole during the first round of the PGA Championship golf tournament on the Ocean Course Thursday, May 20, 2021, in Kiawah Island, S.C. (AP PhotoChris Carlson)

Justin Thomas adjusts his hair on the ninth hole during the first round of the PGA Championship golf tournament on the Ocean Course Thursday, May 20, 2021, in Kiawah Island, S.C. (AP PhotoChris Carlson)

Justin Thomas watches his shot on the ninth tee during the first round of the PGA Championship golf tournament on the Ocean Course Thursday, May 20, 2021, in Kiawah Island, S.C. (AP PhotoDavid J. Phillip)

Justin Thomas watches his shot on the ninth tee during the first round of the PGA Championship golf tournament on the Ocean Course Thursday, May 20, 2021, in Kiawah Island, S.C. (AP PhotoDavid J. Phillip)

Justin Thomas takes his second shot on the second hole during the first round of the PGA Championship golf tournament on the Ocean Course Thursday, May 20, 2021, in Kiawah Island, S.C. (AP PhotoDavid J. Phillip)

Justin Thomas takes his second shot on the second hole during the first round of the PGA Championship golf tournament on the Ocean Course Thursday, May 20, 2021, in Kiawah Island, S.C. (AP PhotoDavid J. Phillip)

Corey Conners, of Canada, putts on the 18th hole during the first round of the PGA Championship golf tournament on the Ocean Course Thursday, May 20, 2021, in Kiawah Island, S.C. (AP PhotoMatt York)

Corey Conners, of Canada, putts on the 18th hole during the first round of the PGA Championship golf tournament on the Ocean Course Thursday, May 20, 2021, in Kiawah Island, S.C. (AP PhotoMatt York)

Dustin Johnson takes his second shot on the first hole during the first round of the PGA Championship golf tournament on the Ocean Course Thursday, May 20, 2021, in Kiawah Island, S.C. (AP PhotoDavid J. Phillip)

Dustin Johnson takes his second shot on the first hole during the first round of the PGA Championship golf tournament on the Ocean Course Thursday, May 20, 2021, in Kiawah Island, S.C. (AP PhotoDavid J. Phillip)

Jordan Spieth watches his tee shot on the 12th hole during the first round of the PGA Championship golf tournament on the Ocean Course Thursday, May 20, 2021, in Kiawah Island, S.C. (AP PhotoMatt York)

Jordan Spieth watches his tee shot on the 12th hole during the first round of the PGA Championship golf tournament on the Ocean Course Thursday, May 20, 2021, in Kiawah Island, S.C. (AP PhotoMatt York)