Park took her first title since the 2008 U.S. Women's Open thanks to the late heroics, which gave her a final round of 6-under 66.
That was good for a two-shot triumph at 17-under 271. She excelled with her putter, draining a 20-foot birdie on the final hole to put an exclamation mark on her triumph.
Shanshan Feng finished with an eagle, holing out from a bunker at No. 18 to complete a round of 6-under 66. She ended up in a fourth-place tie with Natalie Gulbis (68) and Hyo Joo Kim (68) at 14-under.