Third-round leader Gerina Piller, the area resident seeking her first tour victory, birdied the final hole for a 73 to tie for second with South Koreans Amy Yang and Mi Jung Hur.
“I was proud of the way I finished. I’ll be back,” Piller said after her fourth straight top-six finish.
Yang and Hur each shot 71.
Shin birdied three of the first five holes and added another on the par-5 10th. She closed with eight pars, the last an up-and-down save from right of the green on the par-5 18th.
“I actually didn’t know I was in front of everybody, I thought Amy Yang was only one stroke behind, so I was really nervous on the last hole,” Shin said.
Other players showered her with beer after the victory.
“It wasn’t something I pictured, for sure,” Shin said. “I wanted something like champagne, but now I’m stinking of beer. Then they were like, ‘Oh, you stink of beer.” Then they shower you more with water. But it’s still good. I’m so glad they stuck around and gave me a shower of beer.”
She’s projected to jump from 38th to 24th in the world ranking.
“Nothing’s easy, golf is not easy,” Shin said. “I worked my butt off out there. I didn’t have my ‘A’ game this week, surprisingly, and to know that I won with kind of a semi-goodish game, it makes me very happy.”