Phil Mickelson, 50, leads PGA Championship after three rounds

Phil Mickelson walks up the 18th fairway in the third round of the PGA Championship on May 22, 2021, in Kiawah Island, S.C.

Associated Press

May 22, 2021 Updated 5:55 PM PT

KIAWAH ISLAND, S.C. — Phil Mickelson survived a wild ride Saturday at Kiawah Island with a two-under-par 70 in the PGA Championship that left him 18 holes away from becoming golf’s oldest champion in a major.

The 50-year-old Mickelson walked off the 10th green with a five-shot lead and such amazing control of his game that it was shaping up to be another runaway on the Ocean Course.

Far from it.

Mickelson hit one tee shot into the water and another under the tire of a cart. Brooks Koepka rattled off three birdies to tie him for the lead.

The difference was the closing hole at Kiawah, easier as the wind shifted from being in the players’ faces to coming from right to left off the Atlantic Ocean. Koepka, in the group ahead, went just long and took three putts for a bogey and a 70.

Mickelson went well long and played a flop shot, a risky shot to most everyone but him, and nearly jarred it. He curled in the four-foot par putt to become the oldest player with a 54-hole lead in a major since 59-year-old Tom Watson at Turnberry in 2009.

That didn’t end well for Watson, who lost that British Open in a playoff to Stewart Cink. For Mickelson, it’s an opportunity to become the oldest player to win a major. Julius Boros was 48 when he won the 1968 PGA Championship.

Mickelson was at seven-under 209. For all his success in the majors — five victories, runner-up finishes in all four of them — this is only the third time he has held the 54-hole lead.

He will play in the final group with Koepka, a twosome with nine majors among them. Koepka will be going for his third Wanamaker Trophy in the last four years.

Brooks Koepka works on the 16th green during the third round of the PGA Championship on May 22, 2021.

Asked to describe such an occasion, Mickelson was too busy glancing at his watch. Sunlight was fading and he wanted to practice. These opportunities don’t come along as often as they once did.

“I’m not really dwelling back on what took place today,” he said.

Koepka, shaking off effects from ligament surgery on his right knee that has limited him to two tournaments in three months before arriving at Kiawah, called the third round the worst putting performance of his career.

“I’m in the final group,” Koepka said. “That’s what you want.”

Louis Oosthuizen knows the feeling. He started the third round tied with Mickelson and had a long three-putt bogey. The South African never caught up, though he had his chances until missing a four-foot birdie putt on the par-five 16th and a five-foot par putt on the par-three 17th. He wound up with a 72 and was two shots behind.

“Probably the worst I’ve played in a while,” Oosthuizen said. “I was just sort of fighting to stay in it, and at the end there started judging the greens wrong and everything just fell apart. All in all, two behind going into Sunday, I’ve got to take a lot of positives out of that.”

At least they have a chance.

Mickelson broke away quickly with four birdies in seven holes, and he even managed to avoid losing his focus. One distraction came from the fourth fairway, when Mickelson saw a drone in the air left of the green and said to a CBS spotter, “Can you radio to the TV guys to get the drone out of the flight of my shot?” He saved par from a back bunker.

He went out in 32 — Mickelson played the front nine Friday in 31 — and was five shots clear until he showed signs of sputtering. He badly missed a seven-foot birdie attempt on No. 11. He pulled his tee shot into a bunker on No. 12 and had to play back to the fairway, leading to his first bogey of the round.

And then he drove into the water on the 13th with his two-wood, had to hit his third shot from the tee because of where he thought it crossed the hazard line, and missed a 12-footer for bogey. Oosthuizen also found the water with a big fade, dropped farther up the fairway and made bogey.

“Mine was on the edge,” Mickelson said on why he hit again from the tee. “I just didn’t feel good about it.”

It was tight the rest of the way. Mickelson is going after his first major since the 2013 British Open, and the final hour made it clear that this might not be easy.

But it will be loud. The gallery is the largest at a major since the pandemic — the PGA of America has said there would be 10,000 people, a number that felt far greater — and Mickelson was the object of their raucous shouting.

Kevin Streelman bogeyed the 18th for a 70 and was alone in fourth at four-under 212, followed by Branden Grace and Christiaan Bezuidenhout of South Africa, each with a 72.

Jordan Spieth matched the low round of the day with a 68, still seven shots behind and most likely too far back to contend with a dozen players ahead of him.

Spieth was headed back to his rental home to flip on the TV, a rarity for him.

But it’s Phil. It’s theater.

“I don’t watch golf, but I promise you I’m going to turn it on to watch him today,” Spieth said. “It’s pretty incredible. I have no way to relate to it, right? But I also don’t think it’s necessarily that special because didn’t he win a World Golf Championships in the last couple years?

“The guy’s got four good rounds on any golf course in him, and no one would bet against that.”

Mickelson has had three good ones at Kiawah Island.

One more for history.

Wei-Ling Hsu waves to the crowd on the 18th green during the third round of the Pure Silk Championship in Williamsburg, Va.

Wei-Ling Hsu birdied the final hole for a six-under 65 and a share of the third-round lead with Moriya Jutanugarn in the LPGA Tour’s Pure Silk Championship in Williamsburg, Va.

Jutanugarn eagled the par-five seventh in a 65 to match Hsu at 10-under 203 on Kingsmill Resort’s firm and fast River Course.

The 26-year-old Hsu, from Taiwan, is winless on the LPGA Tour. She had five consecutive birdies on Nos. 3-7.

Jutanugarn, also 26, won the 2018 LA Open for her only title. The Thai player’s younger sister, Ariya Jutanugarn, won at Kingsmill in 2016 and 2018.

Jessica Korda was a stroke back, birdieing three of the last four in a 67. She won the season-opening Diamond Resorts Tournament of Champions for her sixth tour title.