American Stacy Lewis claimed a one-shot victory at the LPGA HSBC Women's Champions event in Singapore on Sunday.
Lewis, who finished in a tie for third at the Honda LPGA Thailand event last week, won the sixth title of her career as she finished on an overall score of 15-under-par.
She edged South Korean Na Yeon Choi for the title, while American Paula Creamer was a shot further adrift in third.
"The last four or five holes, I was pretty nervous, I'm not going to lie," said Lewis after her thrilling win.
"I just played hard and put my head down and tried to make as many putts as I could and fortunately I came away with the win."
Lewis was tied with Choi heading into the final day of the tournament but her one-under 71 was enough to give her victory.
An eagle, two birdies and a bogey on the front nine gave her enough leeway to allow for a late hiccup.
Lewis hit bogeys on holes 15 and 17 but Choi's average round - which included two birdies and two bogeys - was not enough to force a playoff as she shot 14-under for the tournament.
Choi lost the same event in a playoff in 2012.
Creamer also hit a one-under 71, with two late bogeys on holes 15 and 16 costing her a chance of a potential triumph.
Thailand's Ariya Jutanugarn was five shots off the pace in fourth while American duo Jessica Korda and Danielle Kang and Chinese Taipei's Candie Kung were tied for fifth at nine-under.
Karrie Webb was the best placed Australian, with the veteran shooting a final round of 69 to tie for 18th place at four under.