Karrie Webb fired a 5-under 67 on Sunday and came from behind to win the Volvik RACV Ladies Masters.
Webb finished at 13-under-par 203 to win by two strokes over three players at Royal Pines Resort.
The Australian had a steady front nine with a birdie on the third and eight pars as she made the turn at minus-9.
Webb ran off three birdies in a 4-hole span from the 12th to jump into the lead at 12-under. She picked up her final birdie on the 17th.
Second-rounder leaders Ariya Jutanugarn and amateur Su-Hyun Oh both carded 71s to drop into a share of second place at minus-11. They were joined there Chella Choi, who closed with a 69.
Jutanugarn posted two birdies and a bogey on the front nine to turn at minus-11. On the back nine, she had another birdie and one more bogey to end there.
Oh bogeyed the second, but came back with birdies at three, four and eight to get to 12-under. She stumbled to a bogey on the ninth, but atoned for that mistake with a birdie on the 11th. Oh faltered to three bogeys in a row from the 12th to fall down the leaderboard, but she rallied to share second with three birdies in the last four holes.
Jessica Korda managed an even-par 72 to end alone in fifth at 10-under 206. Stacey Keating also carded a 72 on Sunday to grab sixth at minus-9.