The tricky conditions led to huge momentum swings throughout the day at the PGA Tour event, with plenty of balls in the water and in the rough beneath the palm trees lining the course at the Kuala Lumpur Golf and Country Club. Second-round leader Keegan Bradley had a 76 to fall into a tie for sixth at 9 under.
Phil Mickelson was 7 under after a 68.
The tournament is an official PGA Tour event for the first time. The winner will receive a two-year PGA Tour exemption and a spot in the Masters.
Defending champion Suzann Pettersen struggled with three early bogeys but recovered for a 1-over 73 to maintain a four-shot lead in the LPGA Taiwan Championship at Yangmei, Taiwan.
The Norwegian dropped three shots over the first five holes but had three birdies and just one more bogey the rest of the way to finish three rounds at 6-under 210. Azahara Munoz (69), Sun Young Yoo (72) and Carlota Ciganda (72) were tied for second at Sunrise Golf and Country Club.
The second-ranked Pettersen has three LPGA Tour victories this year.
Taiwanese star Yani Tseng, the 2011 winner, was 10 over after a 72. Winless in 41 LPGA Tour starts since the 2012 Kia Classic, she has tumbled from first to 25th in the world ranking in seven months.
Kenny Perry bogeyed the final hole to drop into a five-way tie for the lead in the Champions Tour's AT&T Championship in San Antonio.
The Charles Schwab Cup points leader followed his opening 65 with a 71 to match Mike Goodes, Bernhard Langer, Colin Montgomerie and Anders Forsbrand at 8 under.
Goodes had the round of the day, shooting a 63 on TPC San Antonio's AT&T Canyons Course to jump 43 spots on the leaderboard. Montgomerie had a 68, and Langer and Forsbrand shot 69.
The top 30 on the money list Sunday will advance to the season-ending Charles Schwab Cup Championship next week at TPC Harding Park in San Francisco.