Pittsford, NY (My Sportsbook) - Cristie Kerr fired a bogey-free, six-under 66 Friday to move five strokes clear of the field after two rounds of the LPGA Championship.

Kerr, whose only major championship victory came at the 2007 U.S. Women's Open, completed 36 holes at 10-under-par 134. Her total of 134 matches the tournament's 36-hole record for a par-72 course.

The now-retired Lorena Ochoa posted 134 in 2008 at Bulle Rock.

Mika Miyazato and Inbee Park both posted two-under 70s on Friday and are tied for second at five-under-par 139. Amy Yang shot a five-under 67 to move into a share of fourth at minus-four. She was joined there by Brittany Lincicome, who posted a three-under 69 in round two.

Defending champion Anna Nordqvist is tied for 23rd at plus-one after posting a 72 Friday.

After opening with a birdie on the first at Locust Hill Country Club, Kerr did the rest of her scoring on the back nine as she followed the opening birdie with eight consecutive pars.

Kerr started the back nine with a four-foot birdie putt on the 10th to move to minus-six. She parred her next three holes before converting an eight-foot birdie effort on the 14th.

The 13-time winner on the LPGA Tour came right back with a 10-foot birdie putt on the 15th. Kerr drained a 23-footer for birdie on the 17th to get to nine- under.

Kerr pushed her lead to five strokes with a kick-in birdie at the last.

"I played awesome today," Kerr exclaimed. "I made a couple of long putts today. I don't think anybody expected anybody to be in double digits after two days."

Kerr owns the 36-hole lead for the fourth time in her tour career. Two of those 14 were at major championships, last year's U.S. Women's Open and this championship in 1999. Of the previous 13 events, Kerr held on to win four times, twice in 54-hole events and twice in 72-hole events.

"I've won a lot of regular tournaments, It's really time," Kerr said of winning another major. "What Tiger [Woods] did so well for so long was he really focused on the majors and put all of his energy into those weeks, and I feel like I'm doing that now."

Miyazato, who is no relation to women's world No. 1 Ai Miyazato, carded two birdies and one bogey on both nines.

"Today was all about keeping my patience and keeping my game steady," Miyazato said through an interpreter. "In the beginning, there was a few ups and downs, but I was very happy that I was able to make a lot of birdies."

Park birdied the first, but gave that stroke back as she bogeyed the fifth. She carded back-to-back birdies from the seventh to jump to minus-five. Park bogeyed the 12th for the second straight day, but she got that stroke back with a birdie on No. 17.

"Today, I played really solid on the front nine, but I was a little disappointed on the back nine," Park stated.

Michele Redman, Jimin Kang and Na On Min all shot five-under 67 to move into a share of sixth at three-under-par 141. They were joined in sixth place by Azahara Munoz (69).

World No. 2 Jiyai Shin (70) headlines a group of four players at minus-two. She stands alongside In-Kyung Kim (70), Stacy Lewis (74) and Seon Hwa Lee (74).

NOTES: The cut line fell at four-over-par 148 with 73 players moving on to the weekend...Among those that missed the cut were 2008 runner-up Maria Hjorth, three-time champion Se Ri Pak, Rachel Hetherington, Pat Hurst, 2001 runner-up Laura Diaz and 1991 winner Meg Mallon.