South Korea`s Kim In-Kyung fired a five-under 67 to stretch her lead to three shots after the second round of the LPGA Tour`s Portland Classic on Friday.
Kim, whose only top 25 finish this year came at the Swinging Skirts Classic, ended 36 holes at 12-under-par 132. The last of Kim`s three career wins on the US LPGA Tour came in the 2010 season.
"The greens were rolling much better in the morning, so that was kind of nice, and I hit the ball well, similar to yesterday. I`m really pleased with how I played on the par-fives," said the 26-year-old Kim.
"I`m really pleased how I played the last two days, and I`m looking forward to the weekend."
Carlota Ciganda and Hur Mi-Jung both fired seven-under 65s in the second round at the Columbia Edgewater Country Club. They moved into a share of second place at nine-under 135. They were joined there by Laura Diaz, who shot 68 in round two.
Last week`s winner Ryu So-Yeon carded a 66 to move into fifth place at six under. She was joined there by Mina Harigae (69), China`s Lin Xi Yu (68) and Paula Reto (69).
Amelia Lewis is alone in ninth place at seven-under 137 after posting a 71 on Friday.
Kim started her round with birdies on the 10th and 12th. After stumbling to a bogey on the 13th, she came right back with birdies on the 14th and 15th to move to 10-under.
Kim birdied the first before faltering to another bogey on the par-three second. She rebounded with a birdie on the third.
Kim parred three straight from the fourth. She made birdie on the par-five seventh to move to 12-under. Kim parred her final two holes to end there.
Suzann Pettersen rallied with five birdies in her final seven holes to get to six-under-par with a second-round five-under 67.
Defending champion Pettersen and US Solheim Cup captain Juli Inkster (70) are among nine players tied for 10th place.