Mariajo Uribe of Colombia moved past first-round leader Lydia Ko with a 6-under-par 67 on Friday to take a one-stroke lead after two rounds of the LPGA Tour's Women's Australian Open in Canberra, Australia.
Uribe was at 15-under 131 after a round that included five birdies and no bogeys. The 15-year-old Ko and South Korean Jiyai Shin were tied for second at 132.
"I'm not hitting the ball that well, but I'm putting great, so it really helps out when you have to get an up and down and make birdies," Uribe said.
Uribe, who shot a 64 in the opening round, is chasing her first LPGA victory since becoming a professional in 2009. Her first two rounds have been bogey free.
She narrowly missed opportunities for birdies to extend her lead on her final two holes in the second round, lipping out a putt on her next-to-last hole.
"I believe in things that are meant to be and I feel it's meant to be for me to play good this week," Uribe said. "Hopefully, it stays like that for the weekend."
Shin's round of 67 inclued eight birdies and two bogeys.
"I made a couple of bogeys today, but I made more birdies," Shin said. "I still have a good feeling at the moment."
Ko, the amateur wunderkind who was born in South Korea and lives in New Zealand, shot a 69 with five birdies and a bogey after posting a sizzling 63 on Thursday.
"Four under is a pretty good score out there," she said. "It's not an easy golf course. I'm pretty sure it is a pretty good score for me.
"Because my putting was so good yesterday when it didn't go in I was a little disappointed, but, you know, I think I putted well out there and played well."
Kristie Smith of Australia was in fourth place, five shots off the lead after shooting a 68.
Defending champion Jessica Korda shot a 69 and was tied for eighth at 7 under with fellow American Gerina Piller, who carded a 67, and top-ranked Yani Tseng.
American Michelle Wie missed the cut after rounds of 74 and 73.