Spaniard Azahara Munoz set the early pace with a 7-under round of 65 and holds a two-shot lead after the first round of the HSBC Women's Champions event in Singapore.
Munoz, ranked No. 16 in the world, is two shots clear of American Stacy Lewis and and three others. World No. 1 Yani Tseng and Paul Creamer are three shots back at 4-under.
Playing in the first group at The Serapong Course at Sentosa Golf Club, Munoz racked up seven birdies and didn't have a single bogey on her scorecard.
"I played pretty good," Munoz said. "I hit a lot of fairways. When I didn't, I still hit the greens. I feel the key today, I hit a lot of really good second shots so I gave myself a lot of opportunities, and then obviously I converted a lot of them."
Creamer shot a 68 despite being unable to play a practice round after suffering whiplash from a car accident Sunday night in Thailand.
"I was just glad to be out there and playing," Creamer said. "Like I said, I have no expectations whatsoever this week. It's just really to get out there and try to play some golf."
Lewis was impressed with the round Munoz was able to put together despite tricky winds.
"I was definitely surprised to see that number," Lewis said of Munoz's 65. "I don't see somebody doing that every single day, so you just hang in there, hang in there, and hopefully you're there on Sunday."
Jiyai Shin, winner of the season-opening event in Australia, sits in a tie for 29th place after shooting a 71 on Thursday, along with Americans Gerina Piller and Michelle Wie. Inbee Park, who won last week's event in Thailand, is another two shots back in a tie for 44th at 1-over.