Australian golfer Su Oh has shot the best round of the day at the LPGA's Taiwan Championship to rocket into contention at the halfway point of the tournament.
Oh eagled the 18th hole to complete a second-round 66 on Friday to sit in fourth place at five-under overall, two shots behind leaders Jenny Shin and Eun-Hee Ji.
The South Koreans lead by one stroke over American Brittany Altomare, who signed for a 68 at the Miramar Resort and Country Club in Taipei.
World No.1 So Yeon Ryu fired a 68 to move into contention at three-under.
Sung Hyun Park, the US LPGA Tour rookie of the year, continued to struggle and shot a 73.
News that makes sense
Your trusted source for staying up-to-date with the world around you. Get free daily news updates and analysis, straight to your inbox.
Oh's scorching round was a huge turnaround from her 73 on Friday.
Of the other Australians, Sarah Jane Smith (73) is at one-over, Minjee Lee (70) a shot further back and Katherine Kirk (73) at five-over.
Shin offset a pair of bogeys with seven birdies including a birdie-birdie finish.
"I had a really good break back there on the 18th hole," Shin said.
"My tee shot went to the right, but I got relief because it was completely underwater, and I took advantage of that. Made the putt on 17, so I wanted to keep running at it and made my last putt on 18."
