South Korea's Song Bo-Bae sank a birdie on the last hole to take a one-stroke lead after the second round at the USLPGA Tour Mizuno Classic golf tournament on Saturday.

Starting the day two strokes off American overnight leader Brittany Lang, Song carded eight birdies against one bogey for a two-round total of seven-under-par 133.

"My putting was good on the front nine, all single putts, but it was not so good on the back nine. I three-putted on the par-five, 13th hole, even though my shots were good," said Song, who scored her career-lowest score.

"Overall, I'm very satisfied. Putting and shots were good on the front nine, and short game was also good that I could get up and down when I hit over the hard greens.

"I just want to play my game without thinking of winning."

Japan's Akane Iijima hit the day's best of 64 to share second place with Kim In-Kyung of South Korea. Another Japanese, Rui Kitada, was one stroke further back in fourth place.

Defending champion and world No.2 Shin Ji-Yai of South Korea was tied in fifth place with her rival on the US Tour money list Ai Miyazato, Japan's 2007 champion Momoko Ueda, Lang and four other golfers.

After carding six birdies against one bogey Shin said, "I'm satisfied with today's play. Most of the other players scored low."

World No.1 Lorena Ochoa of Mexico was tied at 29th place on 140 with nine other golfers.