Jennifer Song dropped out with a par on the third extra hole, and Park and Lindberg made a decision to play one more hole in fading light.
Park appeared to have the advantage after hitting her approach to ten feet on the tenth hole on the Dinah Shore Tournament Course at Rancho Mirage in California, with Lindberg 25 feet away.
Speaking afterwards, the 31-year-old could not hide her delight.
Inbee Park, right, of South Korea, hugs Pernilla Lindberg, of Sweden, after Park missed a birdie putt on the 10th hole during the eighth playoff round of the LPGA Tour ANA Inspiration golf tournament at Mission Hills Country Club in Rancho Mirage, Calif., Monday, April 2, 2018.
There was nothing to choose between the two on a glorious day in California until the 95-ranked Lindberg sunk a magnificent birdie putt at the 10th and Park's bid for an eighth major ended when her putt rolled to the left of the hole. This one was not an easy major win for her as well. "But at the same time that felt like too big of a dream to even come true, but it has".
"I had a bag packed in the hotel room with clothes and I forgot it!" said a drenched but happy Gunnila, who joined the fun in Poppie's Pond with Jan and Daniel. "I'm excited to be in the position that I'm in and just give myself a learning opportunity".
Stanford sophomore Albane Valenzuela shot 71 to get to 7 under and top the four amateurs to make the cut. "I couldn't believe when that last putt went in", she said.
Park and Song had putts to win on the first two extra holes. So I hit a 3-wood and made enough par saves to keep on playing. I mean, 8-hole playoff, I've never done something like that before either.
"I'm kind of disappointed that I wasn't able to make those putts in the playoffs, but I learned a lot", Park said.
"I dreamt of this moment ever since I was a kid", Lindberg said.
"The first thing I said when I holed that last putt was I know Inbee's going to hole hers too, so I started thinking about the 17th hole again, but she didn't". She won in just her second start of the season in Phoenix two weeks ago, and is on the verge of her 20th career win. "So, I really don't have much of a shot". The long-hitting Thai player barely cleared the water hazard on her second shot and could only three-putt for par to maintain her share of the lead at 14-under 274.
Park's and Lindberg's birdie putts dropped in, sending the last two women standing back to the 18th tee for the fourth time in near darkness. She returned to play a month ago in Singapore after not playing since the Women's British Open in August.
Jessica Korda and Ariya Jutanugarn finished a stroke out of the playoff.