Stacy Lewis, the stand-out player of last year, captured her first title of 2013 with a one-shot win at the HSBC Women's Champions event.
The Texan made par on the 18th to hold on for a one-shot win over world number two Na Yeon Choi of South Korea at Sentosa Golf Club's Serapong Course in Singapore.
It was a nervy finish for Lewis, the 2012 Rolex Player of the Year, as she saw her three-shot advantage cut to one over the final few holes.
"The last four or five holes, I was pretty nervous, I'm not going to lie," Lewis said. "That golf course is hard and it can jump up and get you at any second."
Down the par-five 18th, however, the 28-year-old found the green in two and, after watching Choi miss from 12 feet for birdie, had an easy three putts to secure the win.
Lewis closed with a one-under 71 to finish on 15-under, one clear of Choi (72) and two ahead of compatriot Paula Creamer (71).
Thailand's Ariya Jutanugarn continued her fine run of form with a 71 to end the golf tournament solo fourth on ten-under.
Both Lewis (3) and Choi (2) are close to toppling Yani Tseng from the top spot of the world rankings after the world number one finished tied 28th in Singapore.
Meanwhile, Creamer was not even sure of playing this week after being involved in a car accident earlier in the week.
"It was nice to be in contention and have just a good attitude out there. I think that's the biggest thing that I take away from this week," said Creamer, who has been dealing with a sore neck and right shoulder from the accident.
"We'll see how everything is feeling with my neck and shoulder and go from there," she added.
Lewis, Choi and Creamer all managed to bag a spot in the season-ending CME Group Titleholders event in November thanks to finishing in the top three this week.
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