Christel Boeljon birdied the 72nd from-behind victory at the Australian Ladies Masters.

Boeljon posted her second straight four-under 68 and won by a single stroke at 21-under 267. She was three back at the start of the final round of the season-opener on the Ladies European Tour.

Third-round leader and reigning U.S. Women's Open champion So Yeon Ryu, who fired an 11-under 61 on Friday, only managed an even-par 72 Sunday. She tied for second place with Diana Luna and Ha-Neul Kim, who both shot five-under 67s at the Royal Pines Resort.

With the four tied at 20-under par, Boeljon reached the par-five 18th in two. She left her eagle putt almost four feet short of the cup, but Ryu was in a bunker in two and hit a poor sand shot well past the flag.

Ryu missed her birdie putt and Boeljon converted hers to win the championship.

"My first putt, I was not really happy. It was a bit far away for my liking," said Boeljon. "I better make a two-putt and birdie and then it might be mine. It's not over, 'til it's over. I am really happy I finished with a birdie and it's unbelievable."

Gwladys Nocera fired an eight-under 64 on Sunday to take fifth at minus-18.

Lydia Ko, the 14-year-old amateur from New Zealand, who became the youngest winner of a professional golf tour event last week at the New South Wales Open, carded a two-over 74 Sunday and tied for 32nd at six-under par.