The Ohio State freshman carded rounds of 66-68-71 to reach 8 under through three rounds, two ahead of the hard-charging Schimpf, who had closed to within one after back-to-back birdies on hole Nos. 13 and 14.
However, a bogey on the 14th hole on Saturday left her 2-over on her final round, but she quickly righted her ship with birdies on 15 and 17 to regain a two-shot margin over Schimpf, who closed with her second consecutive round of 70, and Li, who finished at even for the day.
Alice Ziyi Zhao, who was the co-medalist at the U.S. Women's Amateur last summer, and Canadian Vanessa Zhang are tied for fourth at 5-under 213 while Bella Dovhey, Siuue Wu and Ariana Silva also finished in red numbers at 1-under par.
