Defending champion Cheyenne Woods, Tiger Woods’ niece, shot 71 to finish tied for 26th, 10 strokes behind Oh.
The 18-year-old Hull was holding a one-shot lead when she sprayed her tee shot left and into trees on the par-4 sixth, having an air-swing on her second stroke before taking a drop for an unplayable lie. Hull sent her fourth shot to the right of the green, pitched on and then two-putted for a triple-bogey 7.
Oh said she had asked for advice from eight-time Masters winner Karrie Webb and two-time winner Jane Crafter ahead of Sunday’s final round.
“I spoke to Jane this morning who won it the year I was born (1996),” Oh said. “What she said really helped me on the golf course. She just said ‘take one shot at a time’. Karrie said ‘just don’t think, do it. Just let it go, keep doing what you’re doing’.”
The win gives Oh a two-year exemption on the Ladies European Tour.
Most of the golfers will head to Royal Melbourne next week for the Women’s Australian Open, a co-sanctioned event with the LPGA Tour.
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