But the experience emerged as the day wore on in Sunday's final round.
Park won this major tournament in 2013, when it was called the Kraft Nabisco Championship.
Lindberg, the world No 95, completed a big upset when she rammed home a 25-foot birdie putt to beat South Korea's Park In-bee at the eighth extra hole at Mission Hills. Park missed from 15 feet on the first, and Song's 7-footer went to the right on the second. Lindberg responded with a 10-footer to extend the playoff.
Her first win ever was capped off with the traditional leap into Poppie's Pond accompanied by her caddy, Daniel Tayler, and her mom and dad, Gunilla and January. Park knew what she had to do.
Then in the third go-round, Song blinked first and was knocked out of contention with a par, while Park and Lindberg both had birdies. I mean, even (though) she doesn't have much experience, she's in the last group in a playoff, but I think everybody is in the same situation in the playoff. From that spot, she landed her approach 4 feet from the hole and again drained the putt for birdie and a share of the lead.
Park scrambled to save par on the second playoff hole after hitting into the right fairway bunker and almost hitting her third into the water to the right of the green. "Putting in the dark, somehow I was able to make that", Park said. I hit a couple putts short.
Sunday's action also featured some sisterly competition and memorable shot-making.
Then, they moved to the par-3 17th hole, their sixth playoff hole.
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Two players finished just one shot out of the playoff, including American Jessica Korda, who fired a final-round six-under-par 66 but could not seize her first ever major. If you hit a 3-wood, you run out of fairway.
Lindberg carded a one-under round of 71, her highest score of the four day tournament. Korda toured the front nine at 5-under 31 with four birdies, a bogey and the eagle.
Lydia Ko of New Zealand finished tied 20th.
Jutanugarn's sister Moriya ended one shot behind her sister and two off the lead on 13 under, alongside England's Charley Hull (69), whose chances were wrecked by a double bogey on the third hole.
Atthaya Thitikul matched Wie with a 69 in their pairing to top the amateurs at 5 under.
It was a three-horse race towards the finish line to capture the LPGA's first major of the year. The 29-year-old Hall of Famer won the Founders Cup two weeks ago in Phoenix for her 19th tour title, a day after revealing she was 50-50 about retiring before returning from a long break that started after Women's British Open in August. The first putt came from 35 feet above the hole from the back of the green to 4 feet for a par save.
She and Lindberg will tee off at the 10th hole to resume their playoff.