Hyo Joo Kim birdied five of the last eight holes and outlasted Stacy Lewis on Sunday in the LPGA Tour's JTBC Founders Cup in Phoenix.
The 19-year-old Kim closed with a 5-under 67, holing a 10-foot birdie putt on the par-4 18th to beat Lewis by three strokes for her second LPGA Tour title.
"In the morning I wasn't concentrating on winning because I was playing with Stacy Lewis, and as a rookie, I just felt that by playing with her, I would learn a lot from her," Kim said through a translator. "I was just trying to make a good impression as a rookie."
She did.
"She's just really solid," Lewis said. "Even when I did make some putts, she made the putts to follow and she put a lot of pressure on."
The third-ranked Lewis shot a 68. She pulled within a stroke with a birdie on the par-4 16th but three-putted for bogey on 18.
"The way I played on the front, to think I could still be within a shot coming up those last few holes was pretty amazing," Lewis said. "I'm proud of the way I hung in there. I was in three divots today in the fairway, so that didn't really help things."
Projected to jump from eighth to fourth in the world, Kim finished at 21-under 267 at Wildfire Golf Club. She won the Evian Championship last year in France for first major title and has eight victories on the South Korean tour.