Minjee Lee claimed the second major tournament of her career on Sunday, winning the U.S. Women's Open by four strokes from Mina Harigae.

The 26-year-old shot an even-par 71 on Sunday at Pine Needles, extending her one-stroke lead from Harigae coming into the final round.

The world number four coming into this weekend, Lee started strongly with birdies on the opening two holes of the round, giving her a healthy buffer from the chasing pack.

Lee broke the record for the lowest total score over 72 holes with 271, beating the scores of 272 set by Chun In-gee, Juli Inkster and Annika Sorenstam.

She also became the third Australian to win the US Women's Open after Jan Stephenson and Karrie Webb, who also won at Pine Needles in 2001.

Minjee Lee is threatening to run away with the U.S. Women's Open, taking a three-stroke lead heading into the final round on Saturday.

Lee fired a four-under 67 to move to 13-under after 54 holes, breaking the U.S. Women's Open 54-hole record of 201 set in 1999 by Juli Inkster by a single stroke.

The world number four started the third round slowly, scoring a bogey on the fifth hole to fall two shots behind Mina Harigae.

Lee responded quickly with a birdie on the sixth, before breaking the round open with four consecutive birdies between nine and 12.

Playing alongside Lee in the final group, Harigae faltered meanwhile, firing consecutive bogeys on the 11th and 12th hole respectively.

The past three third-round U.S. Women's Open leaders at Pine Needle have all gone on to win the tournament, including Lee's fellow Australian Karrie Webb in 2001.

Australian Minjee Lee and American Mina Harigae are tied for the lead at nine under after two rounds of the U.S. Women's Open played at Pine Needles.

Harigae was tied for the lead after Thursday's first round, and followed it up her 64 with a solid 69, while Lee posted a 67 on Thursday and then followed it with Friday's second-best round of the day, shooting a 66.

The actual round of the day went to South Korea's Choi Hye-jin, who shot a seven-under 64 after entering the day at even par to sit in a tie for third heading into the weekend.

She is tied two shots back from the lead at seven under with Sweden's Anna Nordqvist, one shot ahead of fellow Swede, amateur Ingrid Lindblad, who posted a one under score on Friday after setting the U.S. Women's Open record for lowest score by an amateur with her opening round 65.

Lindblad is tied with world number one Ko Jin-young at six under, with South Korea's Kim Sei-young and Thailand's Moriya Jatanugarn one stroke back at five under.

Rounding out the top-10 are the American trio of Ryann O'Toole, Megan Khang and Andrea Lee, along with England's Bronte Law and South Korea's Park Sung-hyun, tied for ninth at four under.

American Mina Harigae is the outright leader after the first round of the U.S. Women's Open with a seven-under 64, but she was arguably outshone by Swedish amateur Ingrid Lindblad.

Harigae had nine birdies with two bogeys – becoming the sixth player to shoot 64 in tournament history – but leads by just one stroke from Lindblad, who shot the best score by an amateur in U.S. Women's Open history with her 65.

Lindblad was spectacular, particularly on the front-nine, where she birdied the first three holes, as well as the eigthth and ninth, before finally registering her only bogey of the round on the 10th. She responded to that adversity in fine fashion, collecting birdies on 12 and 13.

The chasing pack sits two back from Lindblad, with Swedish compatriot Anna Nordqvist tied at four under with Australia's Minjee Lee and America's Ryann O'Toole.

Keeping with the Swedish theme, Lindblad was partnered with legendary three-time U.S. Women's Open champion Annika Sorenstam, who gave the 22-year-old some glowing praise after their round.

"She's authentic," she said. "She's got a special look, but she's a fearless player.

"She's confident in her own game. I know she doesn't shy away from the limelight that maybe I did as a young girl."

American duo Lexi Thompson and Ally Ewing are tied for sixth at three under, and there is an 11-woman logjam sitting inside the top-10, tied for eighth at two under.

Michelle Wie West, the teenage prodigy who went on to win the U.S. Women's Open, has announced she intends to step away from the LPGA Tour.

The Hawaii-born player, who burst onto the scene as a 10-year-old when she qualified for the U.S. Women's Amateur Public Links Championship, will play just two more competitive events.

Wie West, who gave birth to her first child in 2020, is now 32 and has only played once on the LPGA Tour this year, at the Hilton Grand Vacations Tournament of Champions in January.

She will play the U.S. Women's Open next week and also next year, but that may be it for her as a professional golfer.

"Excited to announce the next phase of my career as I'll be stepping back from playing on the @lpga_tour full time," Wie said on Instagram on Thursday. "I'm so grateful for the past 14 years I spent on tour, travelling the world and competing against the best in the game.

"Excited to spend more time now on projects that I always wanted to do but never had time for and to continually work to help golf become a more diverse and inclusive space."

She will work with Nike on golf projects and could yet one day make a playing return, but for now Wie West is done with the grind of the tour.

"I don't have any regrets because I feel like I've always learned from every mistake that I've made," Wie West told Golfweek.

"I feel like even if it was a huge major fail, at least it makes for a good story now. I think if I hadn't won the U.S. Open, I'd still be out there competing week to week trying to get that U.S. Open win."

She said she felt "very happy in my decision".

Tipped to be the Tiger Woods of the LPGA Tour as a teenager, Wie West was a record breaker during school, setting a series of impressive benchmarks and raising the profile of the women's game.

At 14, she carded the lowest score ever by a woman competing on the PGA Tour with a 68 at the Sony Open, and turned professional just before her 16th birthday.

Injuries hampered her progress despite a slew of major sponsorships, but she fought back in 2014 to claim her only major, in the U.S. Women’s Open at Pinehurst.

Wie West won four other LPGA events during her career, most recently the HSBC Women's World Championship in 2018.

Despite stepping away from the tour, she has refused to call it a retirement, adding: "I'm definitely not ruling anything out."