Kiwi golfer Lydia Ko is six shots off the pace after her second round at the HSBC Women's World Championship in Singapore.
Starting the day in tied for fifth, Ko carded a one-over par round of 73 to fall to a share of 26th at the halfway point of the competition.
The world No. 3 birdied on consecutive holes at the 12th and 13th, but bookended that effort with bogeys on the 11th and 14th.
She also followed her birdie at the 7th hole with a costly double-bogey, unable to capitalise on her momentum from her opening round, which included a spectacular save from the water which went quickly went viral.
South Koreans Amy Yang and Ko Jin-young were tied for the lead, after carding five-under 67s in the second round.
Yang, who was tied for fifth place after the opening day at the Sentosa Golf Club, got off to a disappointing start with a bogey on the third hole but she responded with four birdies in the next six.
Yang added three more gains after the turn and climbed to the top of the leaderboard, despite a blip on the 15th.
Top-ranked Ko shot five birdies in another flawless round to grab a share of the lead and will be hoping to lift the title at the tournament sometimes dubbed "Asia's major."
Ko has had a superb season and the 26-year-old has recorded nine top-10 finishes in her last 10 starts, including five wins.