American world number one Nelly Korda tied an LPGA record by winning her fifth straight tournament by winning the first women’s major of the year at the Chevron Championship in Texas.
Korda, 25, started the final round one shot behind the leader, South Korean Ryu Hae-ran.
But his three-under par on a gusty course allowed him to finish at 13 under to win by two strokes.
This is the second major of his career.
Nancy Lopez (1978) and Annika Sorenstam (2005) are the only other players to win five consecutive LPGA events.
Korda also finished strong, with a birdie on the final hole, and admitted: “That back nine felt like the longest back nine of my life.
“It was a bit tricky on the back nine, but I’m happy to get the win.
“I was really starting to feel it on the back nine, just the nerves setting in. It’s a major tournament. That’s all I ever wanted as a little girl, to lift that major trophy.
“Like I said, I can finally breathe now and enjoy the moment because I was really, really nervous. My stomach hurts.”
A late surge from Swede Maja Stark helped her finish second at 11-under, while American Lauren Coughlin – who had the best round of the day with a 4-under 68 – finished third with a score of minus-10 alongside Canadian Brooke Henderson.
Ryu’s round of 16 performance saw him finish fifth.
English trio Georgia Hall, Charley Hull and Lottie Woad – who won the Augusta National Women’s Amateur earlier this month – all finished the tournament with a share of 23rd place, at one under.
Northern Ireland’s Stephanie Meadow was a shot further back.